方程的两边同乘(x-3),得
5x-1-2(x-3)=-1,
解得x=-2.
检验:当x=-2时,x-3=-5≠0,
所以原方程的解为x=-2.
____ makes the school famous is _______ more than 90% of the students have been admitted to
universities.[ ]
A. Which, that
B. That, /
C. It, because
D. What, that
简述抗乳化剂的作用机理?