A:Cu+2HCl═CuCl2+H2↑
B:Al2O3+3H2O═2Al(OH)3
C:Mg(OH)2 △__ MgO+H2O
D:Ba(OH)2+SO2═BaSO4↓+H2O
设NA为阿伏加德罗常数,下列说法中不正确的是
Who is ____, your father or your mother? (busy)