相关考题
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单项选择题
The derrick is too low. （）it, please.
A.Lower
B.High
C.Top
D.Adjust -
单项选择题
Before the（）of the derrick, check all the tackle closely.
A.operation
B.operate
C.operated
D.operator -
单项选择题
During the voyage, the derrick should be stowed （）.
A. fore
B. aft
C. fore and aft
D. lowered
