销售预测中常用的定性分析方法主要包括（）。 ["调查分析法","专家集合意见法","推销员判断法","产品生命周期法","因果预测分析法"]
标准参照评价。
精神药理学
Why is STP required when VLANs span access layer switches？（） ["to ensure a loop-free topology","to protect against user-side loops","in order to support business applications","because of the risk of lost connectivity without STP","for the most deterministic and highly available network topology"]
为什么说艺术家的癫狂不同于精神病患者的疯狂？
什么是迁移？教会小学儿童学习迁移有哪些基本策略？
