绝缘子盐密测量周期为()一次 ["A、半年一次","B、一年一次","C、两年一次","D、五年一次"]
玻璃退火点的粘度为:() ["A、1013Pa·S","B、1011Pa·S","C、1012Pa·S","D、1010Pa·S"]
影响人的反应倾向的因素有先定概率先前预测()主观偏好等 ["个性特点","奖惩制度","社会舆论","上级态度"]
钻具发生过载断裂,宏观断口上塑性变形较大,存在着明显的()现象。 ["A、胀大","B、颈缩","C、扭曲","D、弯曲"]
车辆弹簧采取()钢。 ["60Si2Mn","65Mn","T7A","GCr15"]
简述常压容器(槽罐类)验收。