A:CH3COO﹣的水解方程式:CH3COO﹣+H2O⇌CH3COOH+OH﹣
B:HCO3﹣的水解方程式:HCO 3− +H2O⇌CO 32− +H3O+
C:CO 32− 的水解方程式:CO 32− +2H2O⇌H2CO3+2OH﹣
D:Fe3+的水解方程式:Fe3++3OH﹣⇌Fe(OH)3
若复数z满足(1-2i)z=2+i,则z的虚部为( )
写出反义词
陡峭—____ 精致—____ 短暂—____ 宁静—____
Tim likes playing _____ basketball and Tom likes playing ____ piano.