制动装置必须平稳可靠，制动能力最小应（力或力矩）≥（）倍额定负荷轴扭矩（或冲力）。 ["1；","1.5；","2.0；","2.5。"]
旋转编码器有几种？各有什么特点？
在观修每一个引导时，如何观察修和安住修？你平时是怎么做的？
Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state?（） [" redundant"," spanned"," provisioned"," converged"]
卫生法学渊源指的是（） ["卫生法的来源","卫生法律规范的表现形式","卫生法的立法机构","卫生法颁布机构","法律条文出自哪部法律或法令"]
坦克以火力支援步兵冲击是怎样进行的？
