【题目】：11.The shortcomings of the petrol engine in the nineteenth century include the followings except ______.
A. unreliable nature of the ignition system B. very expensive and not efficient enough
C. no spark plug is used D. high fire risk caused by petrol
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【题目】：12.The diesel engine is also called compression ignition engine because______.
A. compression stroke is one of the four-strokes of a diesel engine.
B. the diesel engine is ignited by the heat of compression not by spark .
C. the diesel engine has a very high compression ratio.
D. Both A and B
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【题目】：13.In the compression stroke, one main difference between a diesel engine and a petrol engine is that ______.
A. the air is compressed in the sealed cylinder in the diesel engine
B. the petrol engine has a comparatively very low
C.combustion occurs by spark ignition in the diesel engine
D. Both A and B
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【题目】：14.The two basic types of fuel injection pumps used in the diesel engine are ______ and in-line type.
A. out-line type B. low-pressure pipe
C. Distributor Pump Assembly D. fuel filter
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【题目】：15.Compared with the in-line pump, the DPA has the following advantages: self-lubricating, easy servicing, low cost of production and ______.
A. a common single element B. fitted to more bigger engines.
C. a more precision-built unit D. Both A and C
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【题目】：11.liquid (water )-cooling system: 气缸顺序
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【题目】：12.cylinder order: 水冷系统
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【题目】：13.shorting-out: 点火滞后
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【题目】：14.timing-retarded: 短路
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【题目】：15.manifold injection :三元催化
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