—David, there _____ a dictionary and some books on your desk. Please put them away.

—OK. Mum. I’ll do it right away.

A．is

B．are

C．has

D．have

在下班过程中应执行（），上井汇报，填写记录。

A.通用标准

B.岗位标准

C.操作标准

D.安全措施