A:氯气与水反应:Cl2+H2O ⇌ 2H++Cl-+ClO-
B:Ba(OH)2溶液与稀硫酸反应:Ba2++OHˉ+H++SO=BaSO4↓+H2O
C:CaCO3中加入稀盐酸:CaCO3+2H+=Ca2++CO2↑+H2O
D:Mg(OH)2与盐酸反应:OHˉ+2H+=H2O
大家算一算.
3×6-2=____ 2×6+5=____ 2×5+2=____
2×5+1=____ 3×6+6=____ 6×2+3=____
Su Bingtian broke the record. He runs ______ than anyone else in Asia.
观察心脏结构,回答问题: