题目内容

词汇与结构_____ a pilot becomes aware of an in-flight engine compartment fire, it usually is well developed.

A. In case that
B. Not until
C. By the time
D. In spite that

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词汇与结构They can also be indicated by discoloration, bubbling, and/or melting of the engine cowling skin in cases where flames and/or smoke is not _____ to the pilot.

A. visible
B. obvious
C. severe
D. approximate

词汇与结构Engine compartment fires can be ______ by smoke and/or flames coming from the engine cowling area.

A. caused
B. indicated
C. estimated
D. sensed

词汇与结构Unless the airplane manufacturer directs otherwise in the AFM/POH, the first step ______ a fire should be to shut off the fuel supply to the engine.

A. at discovering
B. in discovering
C. to discover
D. on discovering

词汇与结构If the engine compartment fire is oil-fed, as evidenced by thick black smoke, as ______ to a fuel-fed fire which produces bright orange flames, the pilot should consider stopping the propeller rotation by feathering or other means.

A. similar
B. opposed
C. symbolic
D. contradict

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