The purpose of engine stand-by is that ____.A.the main engine in the stand-by conditionB.a

职业资格 已帮助 人

The purpose of engine stand-by is that ____.

A.the main engine in the stand-by condition

B.auxiliary machinery in the stand-by condition

C.dynamical equipments in the stand-by condition and could be used immediately

D.A and B

请帮忙给出正确答案和分析,谢谢!

热搜:i型呼吸衰竭主要见于什么