单项选择题
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
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相关考题
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单项选择题
（），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 -
单项选择题
A is the documentary attestation for the delivery of stores and spare parts（）
A.engine logbook
B.delivery docket
C.store booklet
D.maintenance book -
单项选择题
The purpose of treating the cooling water of the diesel engine is to（） Ⅰ. resist the scale formation in the cooling chamber Ⅱ.lubricate the engine part Ⅲ.increase thermal capacity Ⅳ.resist corrosion
A.Ⅰ+Ⅱ
B.Ⅱ+Ⅲ
C.Ⅲ+Ⅳ
D.Ⅰ+Ⅳ
