心脏病人拔牙使用局麻药中去甲肾上腺素的总剂量应当控制在()
A.4ml以内
B.1ml以内
C.0.04mg以内
D.1mg以内
E.1:1000以内
参考答案:C
It is a good example of a site that many people think _____ to change.
A.need
B.to need
C.needs
D.needing
访问记