男，67岁，感染性休克24小时，测动脉血气分析示：pH7．30，PaCO25．3KP

Students must be strict ____ their studies and teachers should be strict _____ their students.

A．in, at

B．at, with

C．with , in

D．in, with

氨曲南的化学结构为（）

A.A

B.B

C.C

D.D

E.E

My vessel will be able to take another 200 metric tons of cargo（）the previous figure of my declaration.

A.in addition to

B.in connection with

C.in accordance with

D.in relation to

对于VOIP业务中，如果信令上有出现PeNdiNg错误，则应该是由于（）。

A.系统繁忙

B.SS所发的信息无法识别或错误无法错误而挂起

C.系统停止运行

D.端口挂起

常用的滤波电路有（）、（）和（）三种。