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【单选题】
化学电源在日常生活和高科技领域中都有广泛应用。下列说法不正确的是( )
A.
图甲:Zn 2+ 向Cu电极方向移动,Cu电极附近溶液中H + 的浓度增大
B.
图乙:正极的电极反应式为Ag 2 O+2e ﹣ +H 2 O═2Ag+2OH ﹣
C.
图丙:锌筒作负极,发生氧化反应,锌筒会变薄
D.
图丁:使用一段时间后,电解质溶液的酸性减弱,导电能力下降
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举一反三
【判断题】我国将建筑安全事故分为特别重大事故、重大事故和一般事故三个等级。
A.
正确
B.
错误
【判断题】我国将建筑安全事故分为特别重大事故、重大事故和一般事故三个等级。
A.
正确
B.
错误
【单选题】Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You shoul...
A.
About 3 minutes.
B.
About 200 minutes.
C.
About 3 days.
D.
About 3 seconds.
【简答题】下列每个句子均有一个错误,请找出并改正。(注意:每句只有一个错误。) 小题1: There are a pen and two books on the desk. 小题2:Two third of the people were badly injured during the earthquake. 小题3:At last, the Mekong enters into the South C...
【简答题】2019年1月,ABC公司审计部对下属热电公司应收账款进行专项审计。热电公司主要生产蒸汽和电力,至2018年12月底应收账款余额为4620.85万元,涉及121家客户。审计部对121家拖欠单位逐一审查,发现纺织公司拖欠时间长、金额大,共168.11万元,除2018年12月份按照合同正常欠款8.68万元外,自2015年4月签订供汽合同起只支付了部分货款,至2018年11月底累计拖欠159.43万元。...
【简答题】欠供应单位的购货款属于什么会计要素
【简答题】阅读理解。 Tom is studying in a village school. There are two hills not far from his home. There is a valley (山谷) between the two hills. The school is in the middle of the valley. He walks to school every ...
【简答题】2020-5 Part B In the following text, some sentences have been removed. For Questions 41-45, choose the most suitable one from the list A-G to fit into each of the numbered blanks. There are two extra ...
【简答题】SECTION B Directions: For each blank in the following passage there are four words or phrases marked A, B, C, and D. Fill in each blank with the word or phrase that best fits the context. It was early...
【简答题】阅读下列句子,根据所给开首字母,写出符合句子意思的本学期所学单词,注意必要的形式变化。 1. There are two hundred boys r_______ from seven to four in age. 2. Dr. Yuan Longping searched for a way to increase a rich h_______ without increasing...
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