单项选择题
Course directed by the 0SC or CSS to be steered at the beginning of a search is（）.
A.original course
B.initial course
C.final course
D.designated course
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Engine room is（）fire.
A.on
B.in
C.at
D.out -
单项选择题
Floating, caused by winds and current with a determinable direction defines（）.
A.floating
B.sailing
C.drifting
D.running into danger -
单项选择题
Floating, not controlled, without a clearly determinable direction means（）.
A.grounding
B.sailing
C.adrift
D.running into danger
