_____uses one or two high pressure pumps for all the cylinders with one more____ standby ..

职业资格 公共英语 已帮助 人

A.A common rail engine, conventional engines

B.A conventional engine, common rail engines

C.A marine diesel engine, most other engines

D.A two-stroke engine, four-stroke engines

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。