下列哪种局麻药的心脏毒性最强()
A.普鲁卡因
B.利多卡因
C.丁卡因
D.布比卡因
E.罗哌卡因
参考答案:D
全肠外营养热氮比最少为()。
A.1:10
B.1:50
C.1:100
D.1:150
E.1:300
Yesterday she sold her car, _____ she bought a month ago. [ ]
A. whom
B. where
C. that
D. which