配送是广义概念的组织物资订货、签约、进货及对物资处理分配的供应,是以供给者送货到户式的服务性供应,是一种“门到门”的服务。
参考答案:错
Lily was in ____ disturbed state of mind. How could she keep what you said in ____ mind?[ ]
A. /; the
B. a; /
C. the; the
D. /; /
下列各式由左边到右边的变形中,是因式分解的是( )
A.a(x+y)=ax+ay
B.y2-4y+4=y(y-4)+4
C.10a2-5a=5a(2a-1)
D.y2-16+y=(y+4)(y-4)+y