皮皮学，免费搜题
登录
搜题
【多选题】
吗啡的化学结构中具有A.
四个环
B.
哌啶环
C.
手性碳原子
D.
苯环
E.
酸性结构功能基和碱性结构功能基
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】______ refers to the time allowed to complete the loading and unloading process. A.Time of shipment B. Lay time C.On time D.In time
A.
Time of shipment
B.
Lay time
C.
On time
D.
In time
【简答题】v. to gain; to get for oneself by one's own work
【简答题】t_______ (v.)draw out a discussion or process in order to gain time
【单选题】If you keep on, you'll succeed _____. [ ]
A.
in time
B.
at one time C at the same time D. on time
【单选题】______, they had to speed up.
A.
Time is limited
B.
Time was limited
C.
Time being limited
D.
Time has been limited
【简答题】v. (fml) to defeat sb / sth; to gain control over sb / sth
相关题目：
参考解析：
知识点：
题目纠错 0
发布
