“Stand by engine” means _____.
A.prepare to stop the engine
B.assemble an engine on its bedplate
C.make an engine ready for starting
D.make an engine run steadily
第1题
A.reducing exhaust gas velocity
B.increasing the frequency of gas vibration
C.the use of long head pipes
D.the use of zinc electrodes
第2题
A.CO2
B.Foam
C.Water fog
D.Soda acid
第3题
A.sine
B.cosine
C.tangent
D.cotangent
第4题
A.too light of a load
B.injection timing is too early
C.overloading of the engine
D.too low of a compression ratio
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