既能祛风湿，止痛，又可解表的药物是( )
A．威灵仙B．秦艽C．独活D．桂枝E．五加皮
参考答案：C
PV100调节阀自动调节的原理是什么？
---Mum, I cut myself just now.
----You ______put some medicine on it.
A．should
B．need
C．must
D．will
