单选题:There is no reason why you shouldn't tell them beforehand th 题目分类:理工类 题目类型:单选题 查看权限:VIP 题目内容: There is no reason why you shouldn't tell them beforehand that you are leaving. A.in advance B.ahead C.before long D.early 参考答案: 答案解析:
All members of the association adhere to a strict code of pr All members of the association adhere to a strict code of practice.A.insist on B 分类:理工类 题型:单选题 查看答案
He is charming nevertheless, I don't quite trust him. He is charming nevertheless, I don't quite trust him.A.however B.therefore C.des 分类:理工类 题型:单选题 查看答案
可用来代替钢材制造某些曲轴、连杆和凸轮轴等重要零件的铸铁为( )。 可用来代替钢材制造某些曲轴、连杆和凸轮轴等重要零件的铸铁为( )。A.灰口铸铁 B.球墨铸铁 C.蠕墨铸铁 D.耐磨铸铁 分类:理工类 题型:单选题 查看答案
下列属于断路器的专项调试的是( )。 下列属于断路器的专项调试的是( )。A.液压操作机构的调整试验 B.空载特性曲线试验 C.电磁脱扣装置的电压、电流等整定值的调整试验 D.压力表及压力动作阀的 分类:理工类 题型:单选题 查看答案