快速排气阀入口前的电动阀，应在启动供水泵()开启。
A.前
B.同时
C.后
D.视情况而定
参考答案：B
风邪致病，病变部位不固定，是由于 （）
A.风与肝相应，肝病易动
B.风性轻扬
C.风为百病之长
D.风性善动
E.风性数变
How did I find the man who left the paper
A．He came back for the paper.
B．He came back for more copying.
C．He came to me.
D．He invited me to his home.
