人力资源系统做调动时,数据同步失败的可能原因()
A.岗位创建时间比调动时间晚
B.服务器没开启
C.系统有问题,消极使用
D.不清楚,咨询科技部
参考答案:A, B
厚煤层分层开采,当顶板压力大时,为防止冒顶尽量选用()布置。
— Have you found anything about famous scientists ____ you'll use for your talk?
— Not yet. I'll go to the library after school. [ ]
A.what
B.who
C.which
D.that