单项选择题
A deadhead is a(n)（）.
A.tree or log awash in a nearly vertical position
B.crew member who refuses to work
C.upstream end of a land wall
D.buoy that is adrift
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相关考题
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单项选择题
A barometer showing falling pressure indicates the approach of a（）.
A.high pressure system
B.low pressure system
C.high dew point
D.low dew point -
单项选择题
（）the canal transit，the radar was operating.
A.At
B.In
C.During
D.With -
单项选择题
（）should be used during the poor visibility if the radar’s screen shows heavy sea returns.
A.Gain Control
B.Brilliant Control
C.Anti-clutter Sea Control
D.Sweep Intercept
