[单选题] An automobile includes the following major categories:the body,the engine,___ __ an the electrical system.

1、[单选题]During the power stroke,a force of up to 4000 pounds is suddenly applie
to the piston hea for _______ times a second.

• A、30
• B、40
• C、70
• D、30 to 40

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2、[主观题]【英译中】Diesel’s work turned out to be so successful by the first decade of the twentieth century that the engine was named after his name,the diesel engine.

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3、[主观题]【英译中】The burning of air-fuel mixture makes the pistons move up and down,then turn the crankshaft around.

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4、[主观题]【英译中】One of the difference between the diesel engine and the petrol engine is the compression ratio of the diesel engine is very high.

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5、[阅读理解]【单词填空题】He was drinking a glass of wine ______ with water.

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