单项选择题

On no account（）to be exceeded.

A.is the SWL of the crane
B.are the SWL of the crane
C.the SWL of the crane is
D.the SWL of the crane are

点击查看答案&解析

上一题目录下一题

相关考题

单项选择题

Official draft measurements should be（）by authorized persons，agreed by both parties involved.

A.executed
B.located
C.fixed
D.measured

单项选择题

Most pedestal crane power is provided by（）.

A.Electro-hydraulic units
B.Steam units
C.Independent internal combustion power units
D.All of the above

单项选择题

If an attempt is made to hoist a load that exceeds the capacity of an electric winch，an overload safety device causes a circuit breaker to cut off the current to the winch motor（）.

A.when the line pull reaches the rated winch capacity
B.after the line pull exceeds the rated winch capacity
C.after a short build-up of torque
D.immediately