典型冷高压前部天气特征有()
A.偏北风较大
B.气温明显下降
C.A、B都对
D.A、B都错
参考答案:C
_______ the manager came to Beijing on business, he would visit his old friends there.
A.Every time
B.Many times
C.In no time
D.All the time
ZM(自定义)施工代码的工时确认,应由()在工单上进行签字确认才有效。
A.售后服务经理
B.车间主管
C.保修员
D.服务顾问
E.维修技师