The effective pump stroke of an individual port-and-helix fuel injection pump is determine

职业资格 公共英语 已帮助 人

The effective pump stroke of an individual port-and-helix fuel injection pump is determined by the _______.

A.fuel delivery pressure

B.pump plunger diameter

C.plunger control rack position

D.total pump stroke

请帮忙给出正确答案和分析,谢谢!

热搜:n维列向量组a1,an-1线性无关,且与非零向量正交