单项选择题
我们的重吊杆已经长时间不用了。（）
A. Our derrick has been out of use for a long time.
B. Our heavy derrick has been out of use for a long time.
C. Our crane has been out of use for a long time.
D. Our winch has been out of use for a long time.
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相关考题
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单项选择题
不要随意地移动稳索。（）
A. Don’t shift the guy as you like.
B. Don’t shift the stay as you like.
C. Don’t move the derrick as you like.
D. Don’t move the crane as you like. -
单项选择题
请调高一下吊杆。（）
A. Lower the derrick, please.
B. Top the derrick, please.
C. Swing the derrick, please.
D. Adjust the derrick, please. -
单项选择题
吊杆停用时，稳索必须要收起来。（）
A. When the derrick is stopped, the guy must be stowed.
B. When the derrick is stopped, the guy must be topped.
C. When the derrick is stopped, the guy must be lowered.
D. When the guy is stopped, the derrick must be stowed.
