商品编码所用的符号类型可分为：数字元代码、（）、（）、（）。

搜题请搜索小程序“爱下问搜题”

问题填空题

答案

参考答案：字母代码；字母---数字元代码；条形码

单项选择题

The people in Taiwan consume______milk per person today as they did twenty years ago.

A．more than twice as many

B．twice more than as much

C．so much more than twice

D．more than twice as much

判断题

行洪区、蓄洪区、滞洪区也是《河道管理条例》所指的河道。