单项选择题
一釜聚合度比二釜聚合度()A.//A、一样//B.一釜比二釜高//C.一釜比二釜低
单项选择题一釜聚合度比二釜聚合度()
选用中间继电器要考虑是否满足控制线路的要求()A.电压等级B.触头数量C.种类D.容量
单项选择题选用中间继电器要考虑是否满足控制线路的要求()
______ does she intend to take short rests? Every two h...
单项选择题______ does she intend to take short rests? Every two hours.