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單項(xiàng)選擇題

During sea trial, the main engine well be kept run at load（）

A.100%
B.110%
C.85%
D.different

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單項(xiàng)選擇題

During the dock repair, should be measured firstly before tail shaft drawn out（）

A.the sinking of tail shaft
B.the clearance of stern bearing
C.the total flexure of shaft
D.main engine crankshaft deflection

單項(xiàng)選擇題

（），where the ship is docked for hull coating renewal, and for any other required underwater work to be carried out, when the opportunity is taken to make other repairs.

A.Voyage repairs
B.Routine docking
C.Damage repairs
D.Conversion