初级生产（Primary Production）
初级生产（Primary Production）
相关考题：
__________may be defined as any kind of engaging with the language on the part of the learners, usually under the teacher's supervision, whose primary objective is to consolidate learning.A．PresentationB．PracticeC．Production D．Preparation
Which of the following are primary differences between a laptop and a desktop CPU？（）A、heat production B、L2 Cache C、clock speed D、front side busE、power consumption
名词解释题生产可能性曲线（Production possibilities curve）