【单选题】关于聚合物黏性流动的特点描述错误的是 ( )
A.
高分子的流动是通过链段的协同位移运动来完成的
【判断题】目视板应悬挂在生产线或管理场所的醒目处,使人们了解正在进行的工作和需要做些什么。
【单选题】A:你最近 忙什么呢? B:我最近忙着上网课呢。
【单选题】How much do you know about academic writing? Find out by doing this fun quiz. 1 The main difference between academic writing and normal writing is that academic writing ______.
B.
tries to be precise and unbiased
C.
is harder to understand
【判断题】班集体是班级群体发展到高级阶段的表现形式。