【简答题】
1.简述影响电导测量的主要因素。
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答案
1.答:主要因素有:①温度;②电极系统电容的影响;③可溶性气体;④电极极化的影响;⑤电极污染;⑥水样流速。
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要重点抓好___创新、（）创新、（）创新，积极探索有利于破解工作难题的新举措新办法。
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【单选题】
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【单选题】
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【单选题】
( ) 35. Who came up with the phrase according to the passage?
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【单选题】
( ) 36. What can we infer from the last paragraph?
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【单选题】
( ) 37.The greatest river for navigation is ___________.
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【单选题】
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【单选题】
( ) 39. The water in the river is polluted because of _____________.
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【单选题】
( ) 40. The best title of the passage is ___________.
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D. D
