题目内容

词汇与结构Normally, pressurization problems are caused by a malfunctioning of the pressure outflow or the pressure regulating valves _______, which allows the air to escape out of the pressurized cabin.

A. separately
B. respectively
C. individually
D. differently

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词汇与结构Pressurization problems can _______ impair the consciousness of the pilot.

A. slightly
B. lightly
C. hardly
D. seriously

词汇与结构In case of _______ problems, the pilot will use an oxygen mask.

A. pressurization
B. depressurize
C. decompression
D. pressurize

词汇与结构Pressurization problems can also cause a (an) _______danger to the aircraft, as the reduction of the cabin pressure will affect the crew and the passengers.

A. physical
B. immediate
C. sensitive
D. intermediate

词汇与结构The time for useful consciousness is _____ on the altitude flown, the size of the leak and the size of the fuselage.

A. dependent
B. independent
C. mutual
D. inclusive