A:工资薪金实行个税的超额累进税率,符合效率原则
B:根据收入多少确定个税的不同税率,符合公平原则
C:基于公平原则,个税征缴应做到平均纳税
D:基于效率原则,个税征缴应缩小纳税差异
下列说法不正确的是
已知 a+b=-3 , ab=2 ,则 (a-b)2 的值是____.
He wants to make his invention more successful, so he it for many times.