【简答题】finance, financial, financially a. He is a well-known expert in _________ . b. Now that our _________ situation has been improved, we should relax and go traveling.
【单选题】已知函数 f ( x )=2 x +1, x ∈N * .若? x 0 , n ∈N * ,使 f ( x 0 )+ f ( x 0 +1)+…+ f ( x 0 + n )=63成立,则称( x 0 , n )为函数 f ( x )的一个“生成点”.则函数 f ( x )的“生成点”共有( )