利多卡因用于局部麻醉,一次最大剂量为()
A.60~100mg
B.100~150mg
C.200~300mg
D.300~400mg
E.800~1000mg
参考答案:D
_ ___was life different in China many years ago?[ ]
A. How
B. What
C. How about
D. What about
电梯正常运行中,轿厢内的噪声应低于()分贝。
A.55
B.90
C.100
D.110