你可能感興趣的試題

單項(xiàng)選擇題

If a cam-controlled engine has a normal injection pressure at rated speed,the injection pressure will be（）at slow speed.

A.a little lower
B.a little higher
C.too low
D.exactly the same

單項(xiàng)選擇題

The main purpose of changing main engine to electronic controlled is not to（）

A.control fuel injection time more precisely
B.control fuel injection rate more precisely
C.meet the environmental requirements
D.meet high engine speed requirements

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If a camshaft-less engine has a normal injection pressure at rated speed, the injection pressure will be at slow speed（）

你可能感興趣的試題

If a cam-controlled engine has a normal injection pressure at rated speed,the injection pressure will be（）at slow speed.

The main purpose of changing main engine to electronic controlled is not to（）