磷酸二酯酶抑制剂使用的适应证下列正确的为()
A.快速心律失常
B.儿茶酚胺反应差
C.支气管哮喘
D.急性心肌梗死并心源性休克
E.急性失血性休克早期
参考答案:A, B, C, D
(3m+4n)(﹣4n+3m)﹣(2m﹣n)(2m+3n)
You say you don’t believe in marriage,but I bet you sing a different song when you finally ______ with this beautiful girl.
A.fall in love
B.get along
C.are connected
D.are pleased