单项选择题

Which of the fuel injection systems listed uses a spring loaded differential spray needle valve and individual pump for each cylinder?（）

A.Common-rail injection
B.Air injection
C.Jerk pump injection
D.Distribution injection

点击查看答案&解析

上一题目录下一题

单项选择题

A.two position control
B.signal speed floating control
C.proportional speed floating control
D.reset control

单项选择题

A.two position control
B.signal speed floating control
C.proportional control
D.reset control

单项选择题

A.compressed air and nitrogen
B.helium and nitrogen
C.oxygen and hydrogen
D.oxygen and acetylene