单项选择题
A.starting and direction changing trial B.cancelling accelerating function trial C.lowest stable speed trial D.continuous running trial
During the dock repair, each sea valve must be disassem...
单项选择题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
During the dock repair, when installing the tail shaft ...
单项选择题During the dock repair, when installing the tail shaft and propeller, who should be on the spot to supervise?（）
A.chief engineer B.the engineer C.captain D.any member of the engine department
When the vessel entering the dock, the first work that ...
单项选择题When the vessel entering the dock, the first work that engineer should contact with the shipyard （）
A.releasing the boiler water B.the explosion detecting and cleaning for the fuel tank C.the docking project related item D.shore power and fire fighting water supply
