皮皮学，免费搜题
登录
搜题
【单选题】
以甲基橙为指示剂，用氢氧化钠标准滴定溶液滴定三氯化铁溶液中少量的游离盐酸，Fe3+将产生干扰。加入下列哪一种溶液，可消除Fe3+的干扰(E)。A.
柠檬酸三钠;
B.
酒石酸三钠 ;
C.
三乙醇胺 ;
D.
氰化钾;
E.
Ca2+-EDTA(以CaY表示)
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 went abroad for further study.
A.
At times
B.
At a time
C.
At one time
D.
At any time
【单选题】There ( ) many great changes in my hometown since I went abroad.
A.
were
B.
have been
C.
have
D.
are
【简答题】半导体中存在的两种携带电荷参与导电的“粒子”,称为________ 。
【单选题】________ I went abroad I could hardly understand what the foreigners said.
A.
For the first time
B.
The first time
C.
At the first time
D.
The first time which
【单选题】Business will still be _________ unless your price proves attractive in the future.
A.
easy
B.
easier
C.
difficult
D.
difficulty
【判断题】Passage 1 A handshake will be an acceptable greeting around the world. However, the strength, length, and duration of a handshake will vary by culture. Of course, Japanese will still bow to each other...
A.
正确
B.
错误
【单选题】“In no condition you are a Chinese.” Dad told me before I went abroad.
A.
you should forget
B.
forget you
C.
shouldn’t you forget
D.
should you forget
【简答题】建筑构成三要素中,( )居主导地位。
【简答题】When you are starting a small business, you should write a business plan. Writing a business plan is the most important 1_______. This is how people will think about your business. When you 2_________...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
