温度越高,变形抗力越小,可塑性越好。
参考答案:对
The vegetables are very _____________. I like them very much.[ ]
A. fine
B. delicious
C. beautiful
硫磺回收装置开车时,应首先用()进行吹扫。
A、氮气
B、天然气
C、空气
D、蒸汽