【判断题】生活饮用水中不得含有病原微生物,水中化学物质、放射性物质不得危害人体健康,感官性状良好,应经消毒处理。
【多选题】生活饮用水卫生的基本法律规定有哪些?( )
B.
水中所含化学物质和放射性物质的含量,不得对人体健康产生危害,不得影响后代健康
【简答题】完形填空 Mr. Bush comes from 1 . He now works 2 a middle school in our city. He has sixty students. He often says his class is too big and it is hard work for him to ___3_ with every student in English. H...
【单选题】生活饮用水水质卫生要求水中不得含有病原微生物和寄生虫卵,主要是为了防止 (1分)
【判断题】生活饮用水中不得含有病原微生物,水中化学物质、放射性物质不得危害人体健康,感官性状良好,应经消毒处理。
【简答题】阅读理解。 Read the clues (线索): 1. The man whose name is Mr Read in the red house likes running. 2. Mr Smith swims. He doesn't live in the yellow or white house. 3. Mr Black is a tennis player. He lives in...