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can realize that the current weather may be
A.thunderstorm, shower and high wind
B.clear, high wind, good visibility
C.stratonimbus, light rain, poor visibility
A X
4..On the weather chart of ground, the area which has great
difference in temperature between cold and warm air mass is.
A.front
B.low pressure center
C.shear line
A X
5..Radiation fog usually appears in .
A. spring and summer.
B. winter and autumn.
C. summer and autumn.
B X
6..Sudden penetration of fog can create the illusion of
A.pitching up.
B.pitching down.
C.leveling off.
A X
7..The abbreviated plain language " WS WRNG " expressing
A. Wind shear warning
B. Aerodrome warning
C. Hazardous weather warning
A X
8..The adverse effects of ice, snow, or frost on aircraft
performance and flight characteristics include decreased
lift and
A. increased thrust.
B. A decreased stall speed.
C. An increased stall speed.
C X
9..What is the approximate rate unsaturated air will cool
flowing upslope?
A. 3℃ per 1,000 feet.
B. 2℃ per 1,000 feet.
C. 4℃ per 1,000 feet.
A X
10..The tropopause at middle latitude area usually reaches.
A. 8 to 9 km
B.10 to 12 km
C.15 to 17 km
B X
11..What feature is associated with a temperature inversion?
A. A stable layer of air.
B. An unstable layer of air.
C. Air mass thunderstorms.
A X
12..Which are the only cloud types forecast in the Terminal
Aerodrome Forecast
A. Altocumulus
B. Cumulonimbus
C. Stratocumulus
B X
13..Which INITIAL cockpit indications should a pilot be aware
of when a constant tailwind shares to a calm wind?
A. Altitude increase; pitch and indicated airspeed decrease.
B. Altitude, pitch, and indicated airspeed decrease.
C. Altitude, pitch, and indicated airspeed increase.
C X
14..What are basic conditions to form a thunderstorm?
A. an unstable lapse rate and terrain lifting force
B. an unstable lapse rate, an initial lifting force, and
sufficient water vapor.
C. sufficient water vapor and front area
B X
15..What feature is normally associated with the cumulus
stage of a thunderstorm?
A. beginning of rain at the surface
B. frequent lightning
C. continuous updraft
C X
16..To allow pilots of in-trail lighter aircraft to make
flight path adjustments to avoid wake turbulence, pilots of
heavy and large jet aircraft should fly
A. Below the established glide path and slightly to either
side of the on-course centerline.
B. On the established glide path and on the approach course
centerline or runway centerline extended.
C. Above the established glide path and slightly downwind of
the on-course centerline.
B X
17..Which type of icing is associated with the smallest size
of water droplet similar to that found in low-level stratus
clouds?
A. clear ice.
B. Frost ice.
C. Rime ice.
B X
18..The blowing dust or sand usually appear in
A. summer in northern areas.
B. spring in northern areas.
C. spring in southern areas.
B X
19..The Federal Aviation Administration's Flight Information
Service Data Link (FISDL) provides the following products:
A.METARS.SIGMETS, PIREP'S and AIRMETS.
B.SPECIS, SIGMETS, NOTAM'S, and AIRMETS.
C.Convective SIGMETS, PIREPS, AWW's, and adverse conditions.
A X
20..The flight crew learn that there is a stationary front
over their destination airport. Therefore, they can conceive
the present weather at the destination as.
A.cumulus, shower, thunderstorm , good visibility
B.stratus, light rain, poor visibility cause by low clouds
or fog
C.cirrus, radiation fogs or strong turbulence.
B X
21..The heat of the stratophere air is chiefly from .
A.the absorption of sun radiation by the water vapor
B.the absorption of sun ultraviolet ray radiation by the ozone
C.the absorption of ground radiation by the air.
B X
22..The heaviest icing that easy to accumulate in flight is
associated with
A.in cumliform clouds
B.in high clouds, such as cirrus.
C.In altocumulus cloud.
A X
23..The clouds which can produce thunderstorm and hail are .
A.nimbostratus
B.cumulonimbus
C.altostratus.
B X
24..The property change of the airmass is chiefly due to.
A.the change of sun radiation
B.the property change of the underlying cushion
C.the movement of the weather system
B X
25..There is ribbon like precipitation under the clouds but
it evaporated before reaching the ground. This phenomenon is
　
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