问题
选择题
下图甲和乙是双液原电池装置。由图可判断下列说法错误的是

A.甲图电池反应的离子方程式为Cd(s)+Co2+(aq)=Co(s)+Cd2+(aq)
B.2Ag(s)+Cd2+(aq)=Cd(s)+2Ag+(aq)反应能够发生
C.盐桥的作用是形成闭合回路,并使两边溶液保持电中性
D.乙图当有1 mol 电子通过外电路时,正极有108 g Ag析出
答案
答案:B
下图甲和乙是双液原电池装置。由图可判断下列说法错误的是
A.甲图电池反应的离子方程式为Cd(s)+Co2+(aq)=Co(s)+Cd2+(aq)
B.2Ag(s)+Cd2+(aq)=Cd(s)+2Ag+(aq)反应能够发生
C.盐桥的作用是形成闭合回路,并使两边溶液保持电中性
D.乙图当有1 mol 电子通过外电路时,正极有108 g Ag析出
答案:B
Working parents feel that they are not giving their children enough care. They think that their children feel 1 and 2 to spend more time with them. Scientists in some colleges have found that working parents believed that they knew 3 their children, but 4 had ever asked their children what they thought. So scientists interviewed (采访) over 1,000 children of working mothers or fathers to 5 what they wanted. They asked the children 6 they wanted their parents to stay 7 and some 8 questions.After they collected the answers, it was 9 that only 10% of the children in their study said that they wanted more time with their parents. _10_, the children who were interviewed said they wanted their parents to give more 11 to them. They said that their parents were as 12 as a bee. When they were asked about what they 13 most, a large number of the children said that they wanted to feel important and 14 . So parents should know what their children really want and how to get along 15 with them.
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