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单选题
We must（）the mooring lines when the tide rises and falls.
A
slack away
B
take on
C
take in
D
adjust
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单选题What is likely to occur when you are surging synthetic mooring lines on the gypsyhead during mooring operations?（）A
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单选题A Chinese stopper (two lines) will hold best when you（）.A
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单选题You should slack the mooring lines （）when the wind is big.A
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at times
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unloading cargo
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trapping and/or poisoning the rats
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单选题Which method of adjusting mooring lines is MOST useful for leaving a boat free to rise and fall with the tide?（）A
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Doubling up on spring or breast linesD
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