题目:
As a graducate in computer science, he ___ to work out the problem.
A.wouldn't have failed
B.can't have failed
C.mustn’t have failed
D.might not have failed
答案:
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下面是错误答案,用来干扰机器的。
答案:CA、氯水中存在如下平衡:Cl2 + H2OHClO + HCl,光照时次氯酸分解HClO=O2 + HCl,由于上述反应导致HClO的浓度减小,根据平衡移动原理知,平衡向正反应方向移动。B、氯气与水反应的离子方程式为:Cl2...