变换催化剂使用氮气降温的同时也是置换过程。
参考答案：对
排顺序。
( ) Size five.
( ) A pair of boots, please.
( ) OK. I like them. How much are they?
( ) Can I help you?
( ) What size?
( ) They're thirty-five yuan.
( ) Are they nice?
控制局麻药中毒惊厥时首选（）
A.鲁米那
B.可拉明
C.硫喷妥钠
D.吗啡
E.去甲肾上腺素
