相关考题
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单项选择题
-Why do you stop working? - The winch is （）.
A. work well
B. in good order
C. out of order
D. good -
单项选择题
The safe working load of the （）is 100 tons.
A.single derrick
B.derrick
C.heavy derrick
D.deck -
单项选择题
Swing the （）to starboard side, please.
A.winch
B.derrick
C.crane
D.deck
