相关考题
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单项选择题
There is not（）depth of water around the area centered at the lighthouse.
A.ample
B.sufficient
C.enormous
D.incredible -
单项选择题
The vessel was drifted off from her（）due to strong wind.
A.course
B.track
C.direction
D.trend -
单项选择题
The use of the danger signal（）.
A.replaces directional signals
B.makes the other vessel the stand-on vessel
C.indicates doubt as to another vessels actions
D.is the same as a MAYDAY signal
