若固相反应是一般的,当物质扩散的速度可以与相界面上的化学反应速度相比较,称之为()。
A.扩散动力学范围
B.过度范围
C.化学反应范围
D.扩散热力学范围
参考答案:B
目前汽车空调致冷剂多采用氟里昂12
— What is his suggestion?
— Just guess the meaning of it whenever you ________ a new word in reading. [ ]
A. come in
B. come at
C. come across
D. come about