[主观题] 【英译中】braking system

1、[单选题]Pistons for modern engines are made of _______.

• A、cast iron
• B、steel
• C、aluminum-alloy
• D、tin-alloy

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2、[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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3、[主观题]【英译中】With the introduction of computers and electronic devices,the modern vehicle’s electrical system is becoming more and more complex.

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4、[主观题]【英译中】The diesel engines are compression ignition engines.The diesel engine uses the heat of compression to ignite the fuel.

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5、[主观题]【英译中】As a mixture of water and antifreeze,coolant circulates through these water jackets,picking up heat and carrying it away.

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