【单选题】You'd better make preparations for the interview before you ______a job.
【单选题】主机域名www.jh.zj.cn有四个主域组成,其中( )表示最底层的域名。
【单选题】(However) (it is) you have heard, (you'd better) ask him about it (in) per Son.
【判断题】纯电动汽车冷却系统的水泵动力源来源于驱动电机。
【判断题】目前多使用锁口式胶囊,密闭性良好,不必封口。( )