基础数据业务的标准开通测试内容是()。
A.时延
B.ping测试
C.抖动
D.误码率
参考答案:D
I went to see you last Saturday, _____there _____no one in the room.[ ]
A. but; was
B. but; is
C. and; was
D. and; were
员工转正后,如员工单方解除劳动合同的,应该提前()天以书面形式通知公司
A、7
B、10
C、15
D、30