超星 - 词汇学习三 - 查题吧

单选题

Wind shear can subject an aircraft to violent updrafts and downdrafts as well as ________ changes to the horizontal movement of the aircraft.

A. slow
B. dramatic
C. rapid
D. abrupt

单选题

While wind shear can occur at any altitude, low-level wind shear is especially hazardous due to the ________of an aircraft to the ground.

A. close
B. proximity
C. approach
D. access

单选题

Low-level wind shear is commonly ________ with passing frontal systems, thunderstorms, and temperature inversions with strong upper level winds.

A. covered
B. associated
C. contacted
D. related

单选题

During a wind shear situation, the effects can be ________ or very dramatic depending on wind speed and direction of change.

A. subtle
B. little
C. noticeable
D. obvious

单选题

The ________ of a microburst is about 15 minutes during which it can produce downdrafts of up to 6,000 feet per minute.

A. time
B. range
C. lifespan
D. distance

单选题

Clear air turbulence weather is the erratic movement of air masses in the ________ of any visual cues, such as clouds.

A. shortage
B. view
C. absence
D. presence

单选题

Clear air turbulence is impossible to detect either with the naked eye or with ________ radar, meaning that it is difficult to avoid.

A. modern
B. conventional
C. outdated
D. remote

单选题

Because aircraft move so quickly, they experience sudden ________ accelerations or “bumps” as they rapidly cross invisible bodies of air which are moving vertically at many different speeds.

A. excessive
B. quick
C. unwanted
D. unexpected

单选题

Cabin crew and passengers on airliners have been injured when ________ around inside an aircraft cabin during extreme turbulence.

A. tossed
B. went
C. rushed
D. shook

单选题

The rotating vortex-pair created by the wings of a large aircraft can ________ or even flip a smaller aircraft on the ground.

A. deflate
B. reflect
C. deflect
D. defect

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