为了明确有无胆道结石，町做
A．钡剂十二指肠低张造影B．十二指肠引流液分析C．口服胆囊造影D．腹部CTE．EBCP
参考答案：E
-Can you see ______?
-No. Let’s go and have a look.
A．what is happening there
B．what are they doing there
C．what are they talking there
D．what was happening there
下列局部麻醉药中表面麻醉作用最强的是（）。
A.2%盐酸丁卡因
B.4%盐酸可卡因
C.0.5%布比卡因
D.0.5%盐酸达克罗宁
E.2%利多卡因
