皮皮学，免费搜题
登录
搜题
【单选题】
因的作用时间比普鲁卡因长的原因是( )A.
酰胺比酯键稳定，同时还有邻位2各甲基的位阻作用
B.
酰胺比酯键不稳定
C.
氨基酮结构不易水解
D.
碳链支链的位阻作用
E.
以上均不是
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】I must leave for my home town tomorrow as my parents are ___ me to arrive on Sunday.
A.
expecting
B.
waiting
C.
waiting for
D.
expecting for
【单选题】Must I arrive on time ?
A.
No , you needn't
B.
No , you wouldn't
C.
No , you couldn't
D.
No, you mustn't
【单选题】— Must I arrive at school at one o'clock in the afternoon? — No, you_______. [ ]
A.
mustn't
B.
needn't
C.
can't
D.
shouldn't
【单选题】Before the guests come, I must get the glasses ______.
A.
washed
B.
to be washed
C.
being washed
D.
to wash
【简答题】旅游网站的推广有哪些方法?
相关题目：
参考解析：
知识点：
题目纠错 0
发布
