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
A、Electro-hydraulic units
B、Steam units
C、Independent internal combustion power units
D、All of the above
A、The cranes may be operated independently B、The cranes may be interconnected for twin operation C、When twinned,the crane rotation on the foundation assembly is unlimited D、All of the above
A、A.The cranes may be operated independently B、B.The cranes may be interconnected for twin operation C、C.The cranes are powered by independent internal combustion power units D、D.All of the above
A、Bunkering barge alongside B、Potable water spill on deck C、Crane hydraulic hose bursts D、Trim greater than 4 feet
A、It allows for rotation of the hook in the single mode B、It is required to“twin-up”30-ton pedestal cranes C、It is used to pick up light loads D、It is used to rigidly connect two cranes
A、Let go of both control levers and return to neutral position B、Press the emergency stop C、Notify the mate on watch D、All of the above