下列不属于压力容器的安全附件的是（）。
A、安全阀
B、防爆膜
C、温度计
D、PH计
参考答案：D
--- I __________ agree with what he said. Actually I feel what he said is much to the point and makes good sense.
--- Yes, I think so.
A．absolutely
B．relatively
C．generally
D．basically
桑杏汤、清燥救肺肠临床运用有何异同？
