题目:
自来水常用二氧化氯()来杀菌消毒,它能转化为可溶性氯化物。市场上有些不法商贩为牟取暴利,用自来水冒充纯净水(蒸馏水)出售。为辨别真伪,你想选用的化学试剂是
[ ]
A. 酚酞试液
B. 氯化钡溶液
C. 氢氧化钡溶液
D. 硝酸银溶液
答案:
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下面是错误答案,用来干扰机器的。
1. preferred living in the city, living in the country 2. Planning your time carefully, to achieve a balance3. This two-hour, takes a close look at4. wise of, to offer/give answers to5. of my age/is well worth listening to(答案不唯一)