单项选择题
Which of the following statement（s）is/are FALSE regarding a twin pedestal crane set （）.
A.The cranes may be operated independently
B.The cranes may be interconnected for twin operation
C.The cranes are powered by independent internal combustion power units
D.All of the above
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相关考题
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单项选择题
Which method should be used to warm up the pump turbines prior to discharge（）.
A.Lock the turbine rotor and slowly bleed in steam until operating temperature is reached
B.Run the pump at high speed with the discharge valves closed
C.Run the turbine at slow speed with the pump disconnected
D.Shut the discharge valve and run the pump at slow speed -
单项选择题
Where is the most probable location of the remote shutdown station for cargo pumps on a tank barge carrying oil（）.
A.The loading dock
B.The midpoint of the barge
C.Within 25 feet of the pump engine
D.Above the forward rake end -
单项选择题
When viewed from above，the best position for the guy in relation to the boom is（）.
A.At a 45° angle
B.At right angles
C.4 feet aft of the heel of the boom
D.Parallel to the boom
