标定EDTA标准溶液,应选用的基准物有()。A、CaCO3 B、ZnO C、无水碳酸钠D

题型:多项选择题

问题:

标定EDTA标准溶液,应选用的基准物有()。

A、CaCO3

B、ZnO

C、无水碳酸钠

D、NaHCO3

E、重铬酸钾

考点:化学分析工考试化学分析工综合练习化学分析工综合练习题库
题型:多项选择题

用括号中所给单词的形式填空,使语篇意思完整,必要时请用否定式。

     In the modern world, advertising is everywhere! Some people think that ads 1_______ (be) great. But

others hate ads, saying that they make our 2_______ (city) and countryside look ugly. It's 3_______ (truly)

that some ads can be very useful. For instance, they can help you 4_______ (compare) two different

products and save money. When prices 5_______ (list), you can go to the store with the 6_______ (low)

price. However, some advertising can be confusing or 7_______ (leading). Sometimes the picture in an

ad looks a lot better than the real thing. At other times, the words 8_______ (sounds) good but don't really

tell you anything about the quality of the product. So 9_______ (your) have to be careful. 10_______ (let)

their words and pictures fool you.

题型:多项选择题

久卧伤

A.气

B.血

C.肉

D.筋

E.骨

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二羟丙茶碱又称

A.舒喘灵

B.喘息定

C.博利康尼

D.氨哮素E 喘定

题型:多项选择题

产褥期抑郁症的诊断依据中必备的是()

A.失眠

B.精神运动性阻滞

C.情绪抑郁

D.遇事皆感毫无意义或自责感

E.疲劳或乏力

题型:多项选择题

温中补脾汤功效与作用

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