试题与答案

(12分)青年学生应怎样去了解国情?

题型:填空题

题目:

(12分)青年学生应怎样去了解国情?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:E

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下列四种装置中,均盛200mL的溶液。

①0.005 mol/LCuSO4溶液,②0.01 mol/LH2SO4,③ZnCl2溶液,④KCl溶液.

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(2)若将装置④中的外加电源拆去,用导线将两个电极连接,则Fe极上发生的反应是___________________,C极上发生的反应是                  

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