题目内容

The Traffic Collision Avoidance System installed on large aircraft needs the ______ information supplied by transponder signals..

A. altitude
B. attitude
C. speed
D. heading

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All mode A,C, and S transponders include an “ident” button, which ______ a special “thirteen” bit on the mode A reply known as Ident.

A. operates
B. stimulates
C. cultivates
D. activates

When radar equipment ______ the Ident bit, it results in the aircraft’s blip “blossoming” on the radar scope.

A. receives
B. accepts
C. gets
D. turn

The controller can ______ the aircraft amongst others by requesting the ident function from the pilot.

A. navigate
B. navigation
C. locate
D. location

N型半导体的多数载流子是( )

A. 自由电子
B. 空穴
C. 正离子
D. 负离子

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