单项选择题
The indication of a slipping anchor is a（n）（）.
A.Decrease in mooring line length
B.Increase in the opposite amperage
C.Increase in the opposite line tension
D.Decrease in mooring line tension and amperage
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单项选择题
The Coordinator Surface Search（CSS）in a SAR situation should display by night（）.
A.Deck lights forward and aft
B.A white light over two red lights
C.A red light，white light，and blue light in a vertical line
D.A distinctive signal promulgated by the CSS -
单项选择题
Stop search and return to（）.
A.keel
B.virgin
C.origin
D.base -
单项选择题
Please（）search and rescue.
A.make command of
B.take command of
C.get command of
D.have command of
