单项选择题
A.cross-head B.cylinder C.connecting rod D.spark plug
A common trouble with the fuel pump plungers or fuel va...
单项选择题A common trouble with the fuel pump plungers or fuel valve spindle is （）.
A.broken down B.stuck C.oil leakage D.carbonized
A common trouble with the fuel pump plunger or fuel val...
单项选择题A common trouble with the fuel pump plunger or fuel valve spindle is （）.
A.water leakage B.steam leakage C.oil leakage D.air leakage
A charge of fresh air is drawn into the engine cylinder...
单项选择题A charge of fresh air is drawn into the engine cylinder and then （） by the moving piston（） very high pressure.
A.pressed；to B.pressurized；with C.pushed；in D.compressed；to
