单项选择题

在超市购物时我们会发现，绝大多数的商品上都有一个条形码，收银员可以通过对条形码的扫描，快速准确地找到商品的具体信息。条形码所对应的数字有几位( )

A．10位
B．11位
C．13位
D．14位
<上一题 目录 下一题>
热门 试题

单项选择题
Measer. Sharp & Co. have ______ us saying that they are unable to trace your name on their books.
A．replied
B．been in reply to
C．replied to
D．in reply to
单项选择题
The operation of the storage, processing and assembilng of the bonded goods and consignment sales should be approved by and registered ______ the Customs.
A．for
B．by
C．from
D．with
相关试题