皮皮学,免费搜题
登录
logo - 刷刷题
搜题
【单选题】
It's dangerous for children _____ that tall tree. [     ]
A.
are climbing
B.
to climb
C.
climb
D.
climbed
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】Route Details Things needed Leave London _ _2__ ___ Morocco On 15 July Not mentioned Through the Sahara Desert 1.Ride on 3 for almost a week. 2. _ _4_ __ in tents 3. Sleep on the grou...
【简答题】Route Details Things needed Leave London _ _2__ ___ Morocco On 15 July Not mentioned Through the Sahara Desert 1.Ride on 3 for almost a week. 2. _ _4_ __ in tents 3. Sleep on the grou...
【单选题】用超临界流体萃取法提取中药成分时,最常用的溶剂是()
A.
CO 2
B.
NH 3
C.
C 2 H 6
D.
NO 2
E.
C 7 H 16
【单选题】中草药有效成分最常用的提取方法是
A.
升华法
B.
色谱法
C.
水蒸汽蒸馏法
D.
超临界流体萃取法
E.
溶剂法
【简答题】Route Details Things needed Leave London _ _2__ ___ Morocco On 15 July Not mentioned Through the Sahara Desert 1.Ride on 3 for almost a week. 2. _ _4_ __ in tents 3. Sleep on the grou...
【单选题】超临界流体萃取法中最常用的溶剂是
A.
氯仿    
B.
C.
石油醚    
D.
二氧化碳
E.
乙醇
【简答题】Route Details Things needed Leave London _ _2__ ___ Morocco On 15 July Not mentioned Through the Sahara Desert 1.Ride on 3 for almost a week. 2. _ _4_ __ in tents 3. Sleep on the grou...
【简答题】Route Details Things needed Leave London _ _2__ ___ Morocco On 15 July Not mentioned Through the Sahara Desert 1.Ride on 3 for almost a week. 2. _ _4_ __ in tents 3. Sleep on the grou...
【单选题】中药制剂分析中最常用的提取方法是( )
A.
溶剂提取法
B.
煎煮法
C.
升华法
D.
超临界流体萃取法
E.
沉淀法
【单选题】从中药中提取化学成分最常用的方法是
A.
溶剂法
B.
分馏法
C.
升华法
D.
蒸馏法
E.
超临界流体萃取法
相关题目:
参考解析:
知识点:
题目纠错 0
发布
创建自己的小题库 - 刷刷题