單項選擇題

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

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單項選擇題

How does combustion air enter the cylinder of a two-cycle diesel engine?（）

A.Cylinder head valves
B.Ports
C.Turbo chargers
D.Bleeder valves

單項選擇題

Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.

A.spark plugs
B.glow plugs
C.heat of compression
D.a magneto

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How should you warm up a diesel engine that has not been run for some time? （）

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How does combustion air enter the cylinder of a two-cycle diesel engine?（）

Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.

Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.