关于“T”管引流目的说法,正确的是()
A.引流胆汁
B.引流残余结石
C.支撑胆道
D.防止胆道狭窄
E.以上都是
参考答案:E
The teacher was very with the result because everyone had done best. [ ]
A. angry
B. annoyed
C. pleased
指针式万用表用完后,应将档位置于空档或()。