____________ is playing with ____________ ball.[ ]
A. he; his
B. She; his
C. He; his
答案:C
强心苷中毒引起的快速型心律失常,应首选()。
A.普萘洛尔
B.苯妥英钠
C.利多卡因
D.维拉帕米
E.美西律
煤气分析取样应有代表性,防止死角。()