33. 若函数f(x)=loga(2−ax)(a>0f(x)=\log _{a}(2-ax)(a>0f(x)=loga(2−ax)(a>0,a≠1)a\ne 1)a=1)在区间(1,3)(1,3)(1,3)内单调递增,则aaa的取值范围是((( )))