网络营销的企业竞争是一种()的竞争形态。
A.以产品为焦点
B.以顾客为焦点
C.以技术为焦点
D.以人才为焦点
参考答案:B
-What would you like?
-____ [ ]
A. Sorry, I don't know.
B. A cake.
C. Yes , please.
标准圆锥破碎机水平轴间串动不超过2-2cm。