A client on an inpatient psychiatric unit at a community mental health center is pacing the hallway and appears agitated. When the nurse approaches him, he says loudly, "Leave me alone. " What's the nurse's best approach ？（）

A．Say nothing and pace with the client.

B．Say "You sound upset. I'd like to help. "

C．Say "okay" and walk away.

D．Summon help in case the client becomes aggressive.

监理工程师对安装模板的稳定性、刚度、强度、结构物轮廓尺寸的检验应采用（）。

A．抽样检验

B．普通检验

C．二次检验

D．随机检验