柴油机配气机构,顶杆和顶杆套筒安装在()之间。 ["A、两摇臂","B、两推杆","C、摇臂和推杆","D、摇臂和凸轮"]
习惯性违章的三大特征是什么?
柴油机配气机构,推杆安装在机体两侧凸轮轴箱的()。 ["A、下部","B、外部","C、内部","D、上部"]
计算主轴瓦厚度的公式为()。 ["A、δ=[(D-d)-C]/2±(mm)","B、δ=[H-G-(0.025~0.45)]/2(mm)","C、δ=[D-d-(δ上+δ下)](mm)","D、δ=B-K(mm)"]
12V240ZJ6型柴油机主轴瓦在38kN的压力下,紧余量为()。 ["A、0.12~0.2mm","B、0.08~0.2mm","C、0.08~0.12mm","D、0.20~0.24mm"]
什么是安全操作规程?