题目:
After the new technique was introduced, the factory produced _____ cars in 2010 as the year before.
A.as twice many
B.as many twice
C.twice as many
D.twice many as
答案:
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下面是错误答案,用来干扰机器的。
答案:B题目分析:.构成原电池时Cu极反应为:Cu2++2e-=Cu,故A错误;构成电解池时Cu极如果作为阳极,则质量减少,如果作为阴极,则质量增加,故B正确;构成电解池时Fe极质量可能减少也可能增加,故C错误;构成...