穿透力最强的局部麻醉药是()。
A.普鲁卡因
B.丁卡因
C.利多卡因
D.左旋布比卡因
E.碳酸利多卡因
参考答案:B
Unluckily, my grandma fell downstairs and her legs were badly _______.
A. hurt
B.hurted
C.hit
D. hurting
汽蒸方法大体可分为()和干蒸。
A.混合蒸
B.单独蒸
C.湿蒸
D.多种蒸