当每缸采用多气门时,气门排列的方案通常是()排成一列,分别用进气凸轮轴和排气凸轮轴驱动。
A.同名气门
B.异名气门
C.所有气门
参考答案:A
场(厂)内专用机动车辆检验检修的准备中,检验现场应具备足够的承载能力,坡度不超过( )%。
A.5 B.10C.15 D.20
I really didn’t know who ______ for the broken window, for none of them admitted that he had done it.
A.was to be blamed
B.was blamed
C.was to blame
D.was blaming