已知m+n=5，mn=3，则m2n+mn2=( )
15
调度计划类应用包括（）应用。
A.6
B.7
C.8
D.9
A multimedia system allows end users to share, transfer and process a variety of forms of information in a (70) manner.
A．fixed
B．fix
C．unifying
D．unified
