相关考题
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单项选择题
The sailors should show the relevant （）by day.
A.ladders
B.flags
C.hands
D.lines -
单项选择题
You should （）the mooring lines according to the changes of draft.
A.adjusted
B.adjusting
C.adjustment
D.adjust -
单项选择题
Pay more attention to the rising and falling of （）.
A.tide
B.water
C.sea
D.wave
