單項(xiàng)選擇題If your propeller is racing in rough weather，you should（）.

A.decrease your engine speed
B.ignore it
C.increase your engine speed
D.stop your engine until the rough weather passes


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1.單項(xiàng)選擇題If you are unable to stop a diesel engine by any other means，you should（）.

A.discharge a CO2 extinguisher in the air inlet
B.pull off the distributor cap
C.secure the jacket water
D.secure the starting air supply valve

2.單項(xiàng)選擇題If ignited，which material would be a class B fire?（）

A.Magnesium
B.Paper
C.Wood
D.Diesel Oil

3.單項(xiàng)選擇題If an electric cargo winch is being used to lift a draft of cargo and the engine room loses all power，which will occur?（）

A.A pawl，forced by a spring mechanism，will engage the teeth of the bull gear and hold the load
B.An electromagnetic brake will hold the load where it is suspended
C.The load will fall rapidly to the deck unless the foot brake is engaged
D.The load will slowly lower to the deck under control of the drag of the winch motor

4.單項(xiàng)選擇題How would the exhaust of a properly operating diesel engine appear?（）.

A.Light blue haze
B.Light brown haze
C.Light gray haze
D.Perfectly clear

5.單項(xiàng)選擇題How should you warm up a diesel engine that has not been run for some time? （）

A.Run it at minimum speed for a period of time
B.Run it at half speed for a period of time
C.Bring it to top speed immediately
D.Inject ether into the air intake