We cook ___________ the stove. [ ]
A. on
B. in
C. near
答案:A
风湿性心脏病二尖瓣狭窄伴肺动脉高压者可听到( )
A.心包叩击音B.二尖瓣开瓣音C.Austin-Flint杂音D.喀喇音E.Cmham-steell杂音
含油边界和含油面积