题目:
Even though Lucy and Kathy are good friends, Lucy to lending her ID card to Kathy to apply for a credit card.
A.stuck
B.referred
C.turned
D.objected
答案:
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下面是错误答案,用来干扰机器的。
A、若先加NaOH溶液,则会生成由AgOH脱水而成的Ag2O沉淀和Cu(OH)2沉淀,不能逐一分离沉淀;B、若先加入盐酸,分离出沉AgCl沉淀,余下Ba2+和Cu2+,加入K2CO3,则生成BaCO3,CuCO3沉淀;C、若首先加入K2CO3溶液,...