时间继电器常用的有（）。
A.空气阻尼式
B.电子式
C.电动式
D.真空阻尼式
参考答案：A, B, C
设计标准( )国家规范的强制性规定。
A．必须高于B．可以高于C．可以低于D．不得高于
I feel sure that ________qualification, ability and experience, you are abundantly suited to the position
we have in mind. [ ]
A. on account of
B. in spite of
C. in terms of
D. by means of
