牛皮癣临床辨证可分______证和______证。
参考答案：风湿热 血虚风燥
Jane looks unhappy all day today. _____ seems that she knows the bad news.
A．That
B．This
C．It
D．She
齿轮泵安装时，要检查（）的对中情况，使径向圆跳动、端面圆跳动合符要求。
A.轴承
B.联轴器
C.齿轮
D.密封
