A:Cu(OH)2+HC1; Cu(OH)2+CH3COOH
B:NaHCO3+H2SO4;Na2CO3+HCl
C:NaHS04+NaOH; H2SO4+NaOH
D:BaCl2与 Na2SO4;Ba(OH)2 与 CuSO4
如图是汽车启动装置电路简图,当钥匙插入钥匙孔并转动时,下列说法中正确的是( )
Don't talk. Your brother _______.