问题描述:
[单选]
第一级滤芯能去除吸附水中的余氯,异色异味,部分有机物及改善口感,滤芯更换周期为1年。
A.对
B.错
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答案解析:无
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上一篇:第二级滤芯吸附水中余氯和部分有机物,拦截水中细菌(总大肠杆菌群),胶体等杂质,滤芯更换周期为2年。
下一篇:阅读短文,判断句子正(T)误() (完成1—5小题)Christmas is a very important festival (节日) in western countries . It is on December 25th. In the days or even weeks before Christmas Day , many people decorate (装饰) their homes and gardens with lights , Christmas trees and much more . During Christmas , people don "t go to work . Children don "t go to school . Most families get together and have a big dinner . Children like Christmas very much because they can get a lot of gifts . They especially like the gift from Santa Claus.(1)、Christmas is a very important in western countries.
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