请对影响规模收益递减的因素进行分析。
参考答案：
导致规模收益递减的因素主要是管理问题，随着规模的增大，对企业各方面业务协调的难度也变大。
计算器已进入统计状态的标志是______．
- Did you attend Tom’s birthday party at the Grand Hotel?
- I wish I _______. I _______ an English lecture in the school hall. [ ]
A. have; gave
B. did; have given
C. do; had given
D. had; was giving
