以标准剪切速率做十字板试验,峰值读数一般在2min内出现。()
参考答案:错
中国人的()是稳定的,无论社会如何变迁,它不会发生变化。
-What's the most expensive way to travel?
-_____. [ ]
A. By bike
B. On foot
C. By air
D. By bus