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12人的因素
(1)What percentage of aircraft accidents have been deemed to have been directly attributed to human factors-rated related causes?
? ? ?
A．80-90% B．about 75% C．40-50%
正确答案：B
(2)Night vision is enhanced by
?
A．looking slightly to one side of the object you wish to view
?
B．fixing your gaze director on the object you wish to view
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C．ensuring that the cockpit remains brightly illuminated
正确答案：A
(3)Who is exposed to a high glare environment while on the ground (beach sand or snow), which would help to enhance night vision?
? ? ?
A．Don't read small print within one hour of flying. B．Wear good quality sunglasses during the day. C．Avoid using contact lenses.
正确答案：B
(4)Which arctic flying hazard is caused when a cloud layer of uniform thickness overlies a snow or ice covered surface?
? ? ?
A．Whiteout B．Blowing snow C．Ice fog
正确答案：A
(5)The two different types of light sensitive elements on the retina are classified as
?
A．rods which are sensitive to color and cones which work best in dim light
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B．cones which are sensitive to color and rods which work best in dim light
?
C．rods and cones both of which are responsible for color vision
正确答案：B
(6)What is the most effective way to use the eyes during night flight?
? ? ?
A．Look only at far away, dim lights. B．Scan slowly to permit off-center viewing. C．Concentrate directly on each object for a few seconds.
正确答案：B
(7)In the dark, a stationary light will appear to move when stared at for a period of time. This illusion is known as
? ? ?
A．somatogravic illusion B．ground lighting illusion C．autokinesis
正确答案：C
(8)The most effective way to scan the sky for other aircraft during level flight is to
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A．move the head in a continuous arc from side to side
?
B．do not look anywhere but straight ahead unless you detect movement
?
C．move the head about 200 or 300 at a time, pausing after each movement to allow the peripheral vision to detect any movement
正确答案：C
(9)The eye moves in what are termed “saccades” jerks and rests. In visual searching a saccade/rest cycle usually occupies roughly?
? ? ?
A．0.3 s B．1.0 s C．3 s
正确答案：C
(10)The function of the ciliary muscles in the eyes is to
? ?
A．move the eyes from left to right in the socket B．change the size of the pupil to vary the amount of light entering the eye
?
C．alter the shape of the lens to allow the eye to focus on objects at various distances
正确答案：C