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问题 单项选择题

只适用于清水中的溶解氧测定的是（），测定工业废水或污水处理厂各个环节的溶解氧时必须使用（）。

A.修正的碘量法；碘量法

B.无膜电极测定法；修正的碘量法或电化学法

C.碘量法；碘量法

D.碘量法；修正的碘量法或电化学法

答案

参考答案：D

判断题

法定检验商品通关入境后，不可以撤销报检。( )
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问答题

Directions:

The municipal government is going to hold a two-day international financial summit at this coming weekend. During the weekend, traffic around the meeting site will be directed and controlled. Write a notice on behalf of the Traffic Control Bureau under the Public Transportation Department of tile Municipal Government to publicize this information.

You are expected to imagine some specific measures of traffic control. Write the notice in no less than 100 words. Write it neatly on ANSWER SHEET 2. (10 points)
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