简单流体或简单弹性体表现出()、()、()三种流变性质。
参考答案:
虎克弹性、宾汉塑性、牛顿流体
Dr. Peter Spence, ________ headmaster of the school, told us, "________ fifth of pupils here go on
to study at Oxford and Cambridge."[ ]
A. /; A
B. /; The
C. the; The
D. a; A
按下图装置,持续通入X气体,可以看到a处有红色物质生成,b处变蓝,c处得到液体,则X气体是
A.H2
B.CO和H2
C.NH3
D.CH3CH2OH(气)