题目内容

重量分析法中称量形式和沉淀形式必须相同。

A. 对
B. 错

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试设计一种银量法分析方案,测定样品NaCl(含部分Na3PO4)中的Cl-的含量。要求说明选用的滴定剂,反应介质,指示剂以及其他需注意的问题。

简述提高络合滴定选择性的途径。

The advantage(s) of effective public speaking is/are:

A. Generating an understanding of your message.
B. Impacting and persuading your audience.
C. Motivating your audience to take a certain action.
D. All of the above.

The correct order of the 4 main parts of presenting is:

A. Introducing, Delivering, Concluding, Preparing.
B. Preparing, Introducing, Delivering, Concluding.
C. Introducing, Preparing, Delivering, Concluding.
D. Preparing, Delivering, Introducing, Concluding.

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