單項選擇題The transmission system transmitting power from the engine to the propeller is composed of shafts, bearings, and（）

A.propeller
B.flying wheel
C.main engine
D.crankshaft


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1.單項選擇題Which of the followings will affect the spray of fuel oil?（）

A.coke deposits
B.cylinder water temperature
C.asphalt in fuel oil
D.lub oil

2.單項選擇題When the direction handle of telegraph is moved, the relative position of camshaft and crankshaft will be（）

A.changed accordingly
B.unchanged
C.positioned ahead
D.positioned astern

3.單項選擇題Which one of the followings may not be checked before engine starting?（）

A.tank level
B.Various filters
C.Drains
D.seawater temperature

4.單項選擇題The is employed to warm up a large diesel engine before its starting（）

A.hot air
B.hot boiler water
C.cylinder water
D.hot seawater

5.單項選擇題In slow speed two-stroke engines,（）the fresh air entering begins when and stops as（）

A.the inlet port is opened by the up coming piston； the port is closed by the down going
B.the inlet valve is opened by the down going piston；the inlet valve is closed
C.the inlet port is opened by the down going piston；the port is closed by the up coming
D.the inlet valve is opened