單項(xiàng)選擇題

（）does not belong to the mooring trial item.

A.generator sets running trial
B.shafting intensity trial
C.the trail for pumps that working for ME
D.ME safety devices trial

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單項(xiàng)選擇題

According to the regulation of the voyage trial on new ship,（）is one of the trial items of the UMS ship bridge control.

A.starting and direction changing trial
B.cancelling accelerating function trial
C.lowest stable speed trial
D.continuous running trial

單項(xiàng)選擇題

During the dock repair, each sea valve must be disassembled, cleaned and ground well.Before it reassemble the sealing surface between the valve and the valve seat should be checked by （）

A.chief engineer
B.surveyor
C.the engineer
D.the technique personnel of the shipyard