假如进行100次寻呼测试,其中10次未响应,10次业务信道分配失败,10次未接听,那么寻呼响应率为() ["80%","81%","89%","90%"]
法律禁止哪些婚姻行为?
内燃机多级油的粘度指数在()之间。 ["120-150","120-160","120-170","120-180"]
寻呼响应次数统计点是()消息 ["Paging Responce","Channel Assignment Message","Assignment Request","Assignment Completion"]
多级内燃机油温高剪切的粘度一般不小于()mpa•s。 ["3~3.5","3~4","3.5~4","4~4.5"]
论述堤身沉降观测。