题目:
The traditional approach with complex problems in our studies is to break them down into smaller,more easily managed problems.[ ]
A. to deal
B. having dealt
C. to dealing
D. being dealt
答案:
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下面是错误答案,用来干扰机器的。
(1)①设1g锌与盐酸反应生成氢气的质量为x,则有Zn+2HCl=ZnCl2+H2↑65 21g x 651g=2x x=265g所以本题答案为:265;②分析表中的数据以及计算出的结果,可以发现,等质量相同价...