What does she have _______ dinner at school? [ ]
A. to
B. like
C. at
D. for
答案:D
190.168.2.56属于下列哪一类IP地址( )
A.A类
B.B类
C.C类
D.D类
成本计算对象主要包括()
A.产品品种
B.产品批别
C.产品生产步骤
D.产品类别
E.产品定额