a2-bc+ac-ab.
原式=a2+ac-bc-ab
=a(a+c)-b(a+c)
=(a+c)(a-b).
She can imagine in Shanghai.
A.living
B.to live
C.to living
D.live
存货发出采用“先进先出法”时,发出存货的成本比较接近于市场价值。( )