外部过程指过程为了组织的需要由外部实施,外部过程可以不是最终产品的组成部分。
参考答案:错
级数x-x3+x5+…+(-1)nx2n+1+…(-1<x<1)的和函数是()。
A.arctanx
B.xln(1-x)
C.
D.ln(x-1)
—John sings well in our school.
— ______ Henry, my best friend. He is also popular! [ ]
A. So does
B. Neither does
C. So is
D. Neither is