单项选择题
RESULT OF SEARCH NEGATIVE means（）.
A.the search has found nothing
B.the derelict has been found
C.the derelict has been located
D.the derelict has been sighted
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相关考题
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单项选择题
One of the signals，other than a distress signal，that can be used by a vessel to attract attention is a(n)（）.
A.red star shell
B.searchlight
C.burning barrel
D.orange smoke signal -
单项选择题
Generally，you can best keep a vessel under steering control when the vessel has（）.
A.headway
B.sternway
C.no way on，with engines stopped
D.no way on，with engines full ahead -
单项选择题
Generally speaking，the most favorable bottom for anchoring is（）.
A.very soft mud
B.rocky
C.a mixture of mud and clay
D.loose sand
