英语PISTON指（）

[单选题](piston area)×(piston stroke)×(numbers of the cylinders)=engine( ).A．brake horsepowerB．displacementC．cylinder volumeD．cylinder clearance

[单选题]As to the piston cooling, of the following, which statement is not true?（）A . Because the piston is exposed to very high temperature, it must be cooledB . The lower the piston cooling temperature is, the better it isC . Both water and lube oil can be

[单选题]The piston rings are manufactured with a diameter （） the bore of the cylinder.A . larger thanB . smaller thanC . equal toD . none of the above

[单选题]The lowest ring of a piston is （）.A . a coil springB . a sealing ringC . an oil distributor ringD . main seal ring

[单选题]英语AMPLIFIER指（）A .放大器B .火灾盘C .检测元件D .通气孔

[单选题]英语ELECTRICAL指（）A .电动的B .气动的C .电磁阀D .转换器

[单选题]英语TRANSMITTER指（）A .变送器B .调节器C .定位器D .转换器

[单选题]英语SWITCH指（）A .仪表B .开关C .按钮D .信号

[单选题]英语MEASURE指（）A .仪表B .测量C .按钮D .信号

[单选题]英语SPRING指（）A .活塞B .开关C .按钮D .弹簧