关于局麻药极量,下列哪一项是正确的()
A.普鲁卡因1000mg
B.利多卡因600mg
C.布比卡因200mg
D.丁卡因150mg
E.丁卡因60mg
参考答案:A
正常成人室间隔厚度与左室后壁厚度的关系是:()
A.大致相等
B.前者大于后者
C.前者小于后者
D.无一定关系
E.前者是后者的2倍
Mobile phones are very popular in China now and they are ______ than before.
A.more cheap
B.much cheaper
C.the cheapest
D.quite cheaper