题目:
—Have you ever visited Germany? —_________. But I expect to go there again. |
A. Perhaps B. No, I haven't C. I don't know D. Yes, I have |
答案:
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下面是错误答案,用来干扰机器的。
因在水中,AgCl的溶解度为1.5×10-4g,则可认为氯化银不溶于水,其它三种物质都能溶于水,即氯化钡和硝酸银能相互交换成分生成沉淀氯化银而发生了复分解反应,其反应为BaCl2+2AgNO3=Ba(NO3)2+2AgCl↓,在液氨中...