皮皮学，免费搜题
登录
搜题
【单选题】
分配系数和反应平衡常数测定实验中关于滴定四氯化碳相的操作,以下叙述错误的是 ( )。A.
滴定四氯化碳相必须加入碘化钾溶液。
B.
从分液漏斗中吸取四氯化碳时，捏吸耳球使移液管下端在四氯化碳相中吹出一个气泡。
C.
滴定四氯化碳要充分振荡锥形瓶。
D.
滴定四氯化碳相的终点为水层的篮色和四氯化碳层的红色都消失。
E.
滴定完毕后四氯化碳中的碘没有了，所以可以不必回收四氯化碳。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】听句子，选择最佳答案。 A. In the afternoon. B. No,there isn't. C. Houston Rocket. D. That's a great idea. E. At Sun Theatre. 1.__ 2. __ 3.__ 4. __ 5. __ ?
【简答题】完形填空。 There is an American story about three sisters. They loved each other very much. Each 1 could only be happy when she was with her sisters. The oldest sister stood 2 . Her name was Corn. Corn was...
【简答题】在加氢过程中,( )反应器使用最为广泛。
【单选题】You are working as a network technician， study the exhibit carefully. Your boss has informed youthat there have been problems with the WAN that is using EIGRP routing protocol. You arerequired to trou...
A.
The IP address on the tunnel interface on Branch5 is incorrect. It should be 192.168.1.16255.255.255.252
B.
The tunnel source for tunnel 5 is incorrect on the HQ router. It should be serial 2/0
C.
The tunnel numbers for tunnel between the HQ router and the Branch5 router do not match
D.
The tunnel destination address for tunnel 5 is incorrect on the HQ router. It should be 10.2.5.1to match the interface address of the Branch5 router
E.
The tunnel interface for tunnel 5 on the HQ router is in the administrative down state
【简答题】从方框中选择恰当的选项补全对话，有两项是多余的。 A. That's a good idea. B. Would you like to go to the theatre? C. Would you like to go there with me? D. Where is it? E. What day is it today? F. How many people are there? G....
相关题目：