1. [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。
A. 750kW/1名
B. 3000kW/l名
C. 750kW/2名
D. 3000kW/2名
2. [单选题]Cold weather starting of a diesel engine is more difficult than warm weather starting due to
A. use of low viscosity oil in cold weather
B. increased moisture content of inlet air in cold weather
C. increased drag of pistons and bearings due to increased oil viscosity
D. higher compression pressures reached due to smaller clearances existing in the engine during cold weather
