商品档案包括( )。
A．商品出厂资料
B．商品运输单据
C．商品所有权单据
D．库内外温湿度记录
参考答案：A,B,D
— There _____ a lot of meat on the plate. Would you like some?
— Just _____, please.[ ]
A. is; a little
B. is; little
C. are; a few
D. are; few
A．各种电磁波波长和频率都差不多
B．γ射线的频率一定高于X射线的频率
C．X射线的波长有可能等于紫外线的波长
D．可见光的波长一定比无线电波的波长短
