正确答案: C
Ⅰ,Ⅱ都对
题目:能反映故障概率变化情况的是()。Ⅰ.故障率λ(t);Ⅱ.密度函数f(t)
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学习资料的答案和解析:
[单选题]当测得臂距差Δ⊥>0时,可判断该曲轴轴线呈()状态,两主轴承()于相邻轴承。
塌腰形/低
[单选题]The scavenging air ports are located at () that they are just exposed by the upper edge of the piston when the piston is in the bottom dead center position.
such a height