因式分解:x5-x=( );(2)4(a+b)2-16ab=( )。
(1)x(x2+1)(x+1)(x-1);
(2)4(a-b)2
Einstein’s Theory of Relativity was so __________that few people could understand it at that time.
A.controversial
B.religious
C.abstract
D.contradictory
在某压力下,将含甲醇0.45(摩尔分数)的甲醇-水混合物进行闪蒸,规定汽化率为 0.55,进料量为20kmol/h,操作范围内汽液平衡关系为y=O.46x+0.525。则闪蒸后气相产品的流量为( )。
A.(11.02kmol/h
B.(9.01kmol/h
C.(14.14kmol/h
D.(12.50kmol/h