- •Textbook Series
- •Contents
- •1 Basic Concepts
- •The History of Human Performance
- •The Relevance of Human Performance in Aviation
- •ICAO Requirement for the Study of Human Factors
- •The Pilot and Pilot Training
- •Aircraft Accident Statistics
- •Flight Safety
- •The Most Significant Flight Safety Equipment
- •Safety Culture
- •Reason’s Swiss Cheese Model
- •The Five Elements of Safety Culture
- •Flight Safety/Threat and Error Management
- •Threats
- •Errors
- •Undesired Aircraft States
- •Duties of Flight Crew
- •2 The Circulation System
- •Blood Circulation
- •The Blood
- •Composition of the Blood
- •Carriage of Carbon Dioxide
- •The Circulation System
- •What Can Go Wrong
- •System Failures
- •Factors Predisposing to Heart Attack
- •Insufficient Oxygen Carried
- •Carbon Monoxide
- •Smoking
- •Blood Pressure
- •Pressoreceptors and their Function Maintaining Blood Pressure
- •Function
- •Donating Blood and Aircrew
- •Pulmonary Embolism
- •Questions
- •Answers
- •3 Oxygen and Respiration
- •Oxygen Intake
- •Thresholds of Oxygen Requirements Summary
- •Hypoxic Hypoxia
- •Hypoxic Hypoxia Symptoms
- •Stages/Zones of Hypoxia
- •Factors Determining the Severity of and the Susceptibility to Hypoxic Hypoxia
- •Anaemic Hypoxia
- •Time of Useful Consciousness (TUC)
- •Times of Useful Consciousness at Various Altitudes
- •Effective Performance Time (EPT)
- •Hyperventilation
- •Symptoms of Hyperventilation
- •Hypoxia or Hyperventilation?
- •Cabin Pressurization
- •Cabin Decompression
- •Decompression Sickness (DCS)
- •DCS in Flight and Treatment
- •Questions
- •Answers
- •4 The Nervous System, Ear, Hearing and Balance
- •Introduction
- •The Nervous System
- •The Sense Organs
- •Audible Range of the Human Ear and Measurement of Sound
- •Hearing Impairment
- •The Ear and Balance
- •Problems of Balance and Disorientation
- •Somatogyral and Somatogravic Illusions
- •Alcohol and Flying
- •Motion Sickness
- •Coping with Motion Sickness
- •Questions
- •Answers
- •5 The Eye and Vision
- •Function and Structure
- •The Cornea
- •The Iris and Pupil
- •The Lens
- •The Retina
- •The Fovea and Visual Acuity
- •Light and Dark Adaptation
- •Night Vision
- •The Blind Spot
- •Stereopsis (Stereoscopic Vision)
- •Empty Visual Field Myopia
- •High Light Levels
- •Sunglasses
- •Eye Movement
- •Visual Defects
- •Use of Contact Lenses
- •Colour Vision
- •Colour Blindness
- •Vision and Speed
- •Monocular and Binocular Vision
- •Questions
- •Answers
- •6 Flying and Health
- •Flying and Health
- •Acceleration
- •G-forces
- •Effects of Positive G-force on the Human Body
- •Long Duration Negative G
- •Short Duration G-forces
- •Susceptibility and Tolerance to G-forces
- •Summary of G Tolerances
- •Barotrauma
- •Toxic Hazards
- •Body Mass Index (BMI)
- •Obesity
- •Losing Weight
- •Exercise
- •Nutrition and Food Hygiene
- •Fits
- •Faints
- •Alcohol and Alcoholism
- •Alcohol and Flying
- •Drugs and Flying
- •Psychiatric Illnesses
- •Diseases Spread by Animals and Insects
- •Sexually Transmitted Diseases
- •Personal Hygiene
- •Stroboscopic Effect
- •Radiation
- •Common Ailments and Fitness to Fly
- •Drugs and Self-medication
- •Anaesthetics and Analgesics
- •Symptoms in the Air
- •Questions
- •Answers
- •7 Stress
- •An Introduction to Stress
- •The Stress Model
- •Arousal and Performance
- •Stress Reaction and the General Adaption Syndrome (GAS)
- •Stress Factors (Stressors)
- •Physiological Stress Factors
- •External Physiological Factors
- •Internal Physiological Factors
- •Cognitive Stress Factors/Stressors
- •Non-professional Personal Factors/Stressors
- •Stress Table
- •Imaginary Stress (Anxiety)
- •Organizational Stress
- •Stress Effects
- •Coping with Stress
- •Coping with Stress on the Flight Deck
- •Stress Management Away from the Flight Deck
- •Stress Summary
- •Questions
- •Answers
- •Introduction
- •Basic Information Processing
- •Stimuli
- •Receptors and Sensory Memories/Stores
- •Attention
- •Perception
- •Perceived Mental Models
- •Three Dimensional Models
- •Short-term Memory (Working Memory)
- •Long-term Memory
- •Central Decision Maker and Response Selection
- •Motor Programmes (Skills)
- •Human Reliability, Errors and Their Generation
- •The Learning Process
- •Mental Schema
- •Questions
- •Answers
- •9 Behaviour and Motivation
- •An Introduction to Behaviour
- •Categories of Behaviour
- •Evaluating Data
- •Situational Awareness
- •Motivation
- •Questions
- •Answers
- •10 Cognition in Aviation
- •Cognition in Aviation
- •Visual Illusions
- •An Illusion of Movement
- •Other Sources of Illusions
- •Illusions When Taxiing
- •Illusions on Take-off
- •Illusions in the Cruise
- •Approach and Landing
- •Initial Judgement of Appropriate Glideslope
- •Maintenance of the Glideslope
- •Ground Proximity Judgements
- •Protective Measures against Illusions
- •Collision and the Retinal Image
- •Human Performance Cognition in Aviation
- •Special Situations
- •Spatial Orientation in Flight and the “Seat-of-the-pants”
- •Oculogravic and Oculogyral Illusions
- •Questions
- •Answers
- •11 Sleep and Fatigue
- •General
- •Biological Rhythms and Clocks
- •Body Temperature
- •Time of Day and Performance
- •Credit/Debit Systems
- •Measurement and Phases of Sleep
- •Age and Sleep
- •Naps and Microsleeps
- •Shift Work
- •Time Zone Crossing
- •Sleep Planning
- •Sleep Hygiene
- •Sleep and Alcohol
- •Sleep Disorders
- •Drugs and Sleep Management
- •Fatigue
- •Vigilance and Hypovigilance
- •Questions
- •Answers
- •12 Individual Differences and Interpersonal Relationships
- •Introduction
- •Personality
- •Interactive Style
- •The Individual’s Contribution within a Group
- •Cohesion
- •Group Decision Making
- •Improving Group Decision Making
- •Leadership
- •The Authority Gradient and Leadership Styles
- •Interacting with Other Agencies
- •Questions
- •Answers
- •13 Communication and Cooperation
- •Introduction
- •A Simple Communications Model
- •Types of Questions
- •Communications Concepts
- •Good Communications
- •Personal Communications
- •Cockpit Communications
- •Professional Languages
- •Metacommunications
- •Briefings
- •Communications to Achieve Coordination
- •Synchronization
- •Synergy in Joint Actions
- •Barriers to Crew Cooperation and Teamwork
- •Good Team Work
- •Summary
- •Miscommunication
- •Questions
- •Answers
- •14 Man and Machine
- •Introduction
- •The Conceptual Model
- •Software
- •Hardware and Automation
- •Intelligent Flight Decks
- •Colour Displays
- •System Active and Latent Failures/Errors
- •System Tolerance
- •Design-induced Errors
- •Questions
- •Answers
- •15 Decision Making and Risk
- •Introduction
- •The Mechanics of Decision Making
- •Standard Operating Procedures
- •Errors, Sources and Limits in the Decision-making Process
- •Personality Traits and Effective Crew Decision Making
- •Judgement Concept
- •Commitment
- •Questions
- •Answers
- •16 Human Factors Incident Reporting
- •Incident Reporting
- •Aeronautical Information Circulars
- •Staines Trident Accident 1972
- •17 Introduction to Crew Resource Management
- •Introduction
- •Communication
- •Hearing Versus Listening
- •Question Types
- •Methods of Communication
- •Communication Styles
- •Overload
- •Situational Awareness and Mental Models
- •Decision Making
- •Personality
- •Where We Focus Our Attention
- •How We Acquire Information
- •How We Make Decisions
- •How People Live
- •Behaviour
- •Modes of Behaviour
- •Team Skill
- •18 Specimen Questions
- •Answers to Specimen Papers
- •Revision Questions
- •Answers to Revision Questions
- •Specimen Examination Paper
- •Answers to Specimen Examination Paper
- •Explanations to Specimen Examination Paper
- •19 Glossary
- •Glossary of Terms
- •20 Index
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Flying and Health |
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Health and Flying 6
The more potent forms of analgesics (pain killers) may produce a significant decrement in performance. If such analgesics are required, the pain for which they are being taken generally indicates a condition which precludes flying.
Symptoms in the Air
Accidents and incidents have occurred as a result of aircrew flying whilst medically unfit and some have been associated with relatively trivial ailments. Although symptoms of colds, sore throats and abdominal upsets may cause little or no problem while on the ground, these may become a problem in the air by distracting the sufferer and degrading his/her performance.
The in-flight environment may also increase the severity of symptoms which may be minor when on the ground.
REMEMBER:
IF A PILOT IS SO UNWELL THAT MEDICATION IS REQUIRED, THEN HE/SHE MUST
CONSIDER HIMSELF/HERSELF UNFIT TO FLY.
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1. |
A pilot is 2 metres tall and weighs 80 kg, his BMI is: |
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22 |
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b. |
24 |
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c. |
18 |
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d. |
20 |
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2. |
A pilot has a BMI of 26 and is 1.75 metres tall, his/her weight is: |
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a. |
92 kg |
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b. |
78.5 kg |
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c. |
85 kg |
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d. |
79.5 kg |
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3. |
Using the BMI formula, when will pilots be considered overweight? |
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a. |
When they score over 30 for males and 29 for females |
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b. |
When they score over 26 for males and 22 for females |
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c. |
When they score 30 for males and 29 for females |
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d. |
When they score over 25 for males and 24 for females |
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4. |
Using the BMI formula, when will a pilot be obese? |
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When they score over 30 for males and 28 for females |
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b. |
When they score over 26 for males and 29 for females |
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c. |
When they score over 30 for males and 29 for females |
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d. |
When they score over 32 for males and 26 for females |
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5. |
What is the weekly level of alcohol consumption that will cause physical damage? |
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a. |
Consuming 22 units for men and 14 units for women |
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b. |
Consuming 21 units for men and 15 units for women |
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c. |
Consuming 24 units for men and 14 units for women |
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d. |
Consuming 21 units for men and 14 units for women |
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6. |
What is the World Health Organization’s definition of alcoholism? |
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Answer: “When the excessive use of alcohol repeatedly damages a person’s physical, |
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mental or social life” |
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7. |
At what rate does the body remove alcohol from the system? |
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a. |
Approximately 1.5 units an hour |
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b. |
Approximately 2 units an hour |
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c. |
Approximately 2.5 units an hour |
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d. |
Approximately 1 unit an hour |
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8. |
What is the absolute minimum time a pilot should stop drinking before flying? |
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6 hours but it depends upon the amount of alcohol that has been consumed |
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b. |
24 hours but it depends upon the amount of alcohol that has been consumed |
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c. |
12 hours but it depends upon the amount of alcohol that has been consumed |
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d. |
8 hours but it depends upon the amount of alcohol that has been consumed |
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9. |
Which of the following diseases is considered to be the world’s biggest killer? |
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a. |
Typhoid |
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b. |
Malaria |
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c. |
Yellow Fever |
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d. |
Influenza |
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10. |
How much exercise is sufficient to reduce the risk of coronary disease? |
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a. |
Regular and raise the pulse by 100% for at least 20 minutes 2 times a week |
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b. |
Raise the pulse by 100% for at least 20 minutes 3 times a week |
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c. |
Raise the pulse by 100% for at least 30 minutes 3 times a week |
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d. |
Regular and raise the pulse by 100% for at least 20 minutes 3 times a week |
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11. |
What causes otic barotrauma and when is it likely to occur? |
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Blockage in the eustachian tube which is most likely to occur in the descent |
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b. |
Blockage in the eustachian tube which is most likely to occur in the climb |
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c. |
Blockage in the eustachian tube and around the eardrum which is most likely |
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to occur in the descent |
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d. |
Blockage in the eustachian tube and around the eardrum which is most likely |
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to occur in the climb |
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12. |
A prudent pilot should avoid flying for ..................... hours having consumed small |
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amounts of alcohol. |
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12 hours |
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b. |
8 hours |
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c. |
24 hours |
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d. |
6 hours |
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13. |
The human body can tolerate a maximum short duration g-force of ............. in the |
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.............. axis. |
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25g |
vertical |
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b. |
45g |
vertical |
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c. |
25g |
fore/aft |
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d. |
-3g |
fore/aft |
14.The most common cause of in-flight incapacitation is:
a.heart attack
b.influenza
c.the common cold
d.gastroenteritis
15.If a passenger of a helicopter is feeling unwell due to the rotation of the rotors causing a stroboscopic effect, what is the best course of action?
a.Move the passenger away from the window
b.Give the passenger oxygen as soon as possible
c.Land as soon as possible and seek medical assistance
d.No action is necessary as the effect is not dangerous
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16. |
The two types of radiation are: |
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galactic and sun spots |
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b. |
galactic and solar |
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c. |
high frequency and low frequency |
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d. |
solar flares and galactic |
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17. |
If, having tried all normal methods, the ears cannot be cleared in flight, the |
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following action should be taken: |
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ignore and it will go away |
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descend to 10 000 ft, or MSA - whichever is the higher |
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c. |
seek medical advice as soon as possible |
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d. |
descend as quickly as possible to minimize pain |
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18. |
To remove mercury spillage ...................... must not be used: |
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water |
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b. |
white spirits |
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c. |
acid |
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d. |
compressed air |
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19. |
The best method for losing weight is: |
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a. |
the use of appetite suppressants |
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b. |
to take plenty of exercise |
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c. |
to go on a crash diet |
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d. |
to eat less |
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20. |
Hypoglycaemia can be caused by: |
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a. |
not eating regularly or fasting |
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b. |
too much sugar in the blood |
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c. |
excessive g-forces |
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d. |
stress |
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21. |
Trace Elements should be obtained from: |
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a. |
a healthy and balanced daily diet |
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b. |
the use of supplementary pills |
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c. |
a high-fibre diet |
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d. |
a high-fibre and very low-fat diet |
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22. |
Food poisoning normally takes effect within .................... of eating contaminated |
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food. |
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a. |
30 minutes |
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b. |
60 minutes |
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c. |
90 minutes |
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d. |
120 minutes |
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6 Questions
Questions 6
23.Alcohol is removed from the body at the rate of .......... milligrams per ..........
millilitres per hour.
a. |
10 |
50 |
b. |
10 |
100 |
c. |
10 |
120 |
d. |
15 |
100 |
24.Permanent damage to the body of a man may occur if the consumption of alcohol level is ...........units daily and .......... units weekly.
a. |
5 |
20 |
b. |
5 |
21 |
c. |
5 |
22 |
d. |
3 |
14 |
25.A pilot’s performance can be affected by an intake of caffeine above ............. mg and should limit him/herself to a daily intake of approximately ............ mg.
a. |
100 |
100 - 500 |
b. |
100 |
100 - 900 |
c. |
200 |
250 - 300 |
d.200 200 - 600
26.Galactic or cosmic radiation :
a.decreases with altitude
b.increases as latitude increases
c.increases as latitude decreases
d.increases as longitude increases
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Questions 6
Questions 6
119