单项选择题 表袋是属于哪种类型的袋子（ ）

单项选择题 4. Confucius considered, “nature was not a lifeless mechanism separate from humans; instead, it was the great world of life and the process of ________ of life.”

单项选择题 在工厂设计时不仅要从（ ）考虑，也应结合（ ）。