[单选题]我国《海船船员值班规则》对在港船舶轮机值班人员组成规定：推进功率为( )及以上的船舶，必须安排至少( )机工协助值班轮机员值班。

正确答案 ：A

750kW/1名

[单选题]Cold weather starting of a diesel engine is more difficult than warm weather starting due to

正确答案 ：C

increased drag of pistons and bearings due to increased oil viscosity

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