A:氯水中:2c(Cl2)=c(ClO﹣)+c(Cl﹣)+c(HClO)
B:25℃时,pH=12的NaOH溶液与pH=12的氨水:c (Na+)=c(NH4+ )
C:pH=4的0.1 mol•L﹣1的NaHA溶液中:c(HA﹣)>c(H+)>c(H2A)>c(A2﹣)
D:在K2CO3溶液中:c(CO32﹣)+c(OH﹣)=c(HCO3﹣)+c( H+)
我国某地有一口井,每年只有1天有阳光直射井底的现象,该地的纬度和该天日期搭配正确的是( )
材料一:全国政协十二届三次会议上,中国民主促进会中央提交《关于进一步调整我国农村教师编制的提案》。
材料二:全国政协十二届四次会议上,中国农工民主党中央提交《关于打造一带一路健康命运共同体的建议》的提案;中国致公党中央提交《关于构建海外就业保障体系,服务“一带一路”倡议的提案》。这些提案从不同方面推动我我国“一带一路”倡议的实施。
B)根据句子意思,用括号中所给的单词适当形式填空。____ ▲ (wolf) belong to the dog family, living and hunting together.____ With the money donated, we have ▲ (success) helped many poor young girls return to school.____ If we always keep our worries to ▲ (we), things will get even worse.____ Our head teacher warned us ▲ (not fly) kites near power lines in spring.____ Though it seemed ▲ (hope) to pass the exam, he still kept on trying.____ A recent scientific report says three ▲ (eight) of the school students suffer from sub-health(亚健康).
八年级的小赖同学自称为历史通,却被同学问的“英国资产阶级革命爆发时在位的国王是谁”给难住了,请你帮助他,正确答案是( )