【单选题】In May, SSG, general taxpayer, mainly engaged in design service, got Millions RMB for its services and issued special invoice. Which tax rate is applicable? ( )
【简答题】已知向量 m =( x 2 ,y-cx) , n =(1,x+b) , m ∥ n ,(x,y,b,c∈R),且把其中x,y所满足的关系式记为y=f(x),若f′(x)为f(x)的导函数,F(x)=f(x)+af′(x)(a>0),且F(x)是R上的奇函数. (Ⅰ)求 b a 和c的值; (Ⅱ)若函数f(x)在 [ a 2 , a 2 ] 上单调递减,求b的取值范围; (Ⅲ)当a=2时,设0<t<...