室温下,下列各组离子在指定溶液中一定能大量共存的是[ ]
A.饱和氯水中
B.溶液中
C.pH=13的溶液中
D.由水电离溶液中
答案:C
《饮食娱乐服务企业环境管理政策》规定:( )在无排水管网处兴办产生和排放污水的饮食服务企业。
A.严格限制
B.严禁
C.严格控制
D.不提倡
So we have focused on strategic areas where we can make the biggest impact on agricultural change that stretch from the farm to the market to the table and keep people nourished and productive, health systems that help people spend their days working rather than sick or dying, opportunities for women and girls that allow them to contribute to economic and social progress.