题目内容

_______ is a sudden, drastic change in wind speed and/or wind direction over a small area. (P241)

A. Wind shear
B. Turbulence
C. Thunderstorm
D. Lightning

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Thunderstorms produce some of the most dangerous weather elements in aviation, and you should avoid _____ them.

A. penetrating
B. to penetrate
C. penetrate
D. penetrated

There are three conditions necessary to create a thunderstorm: air that has a ______ towards instability, some type of lifting action, and relatively high moisture.

A. tendency
B. attendance
C. expectation
D. anticipation

There are three conditions necessary to create a thunderstorm: air that has a tendency towards _______, some type of lifting action, and relatively high moisture content.

A. inability
B. instability
C. stability
D. unstable

Thunderstorms progress three definite stages: cumulus stage, mature stage and _______ stage.

A. dispersing
B. dispelling
C. dissipating
D. dispatching