下列哪项引起右室容量负荷过重（）
A.心包炎
B.三尖瓣关闭不全
C.心动过速
D.心肌炎
E.肥厚型心肌病
参考答案：B
Don't use words, expressions or phrases known to people with__________knowledge. [ ]
A. special
B. specific
C. common
D. extraordinary
4除2.1的商再加上3.6与2.5的积，和是多少？
