单项选择题

Codes are scanned by ______.

A．the checkout clerk
B．the customers themselves.
C．a laser beam of light.
D．the cash register.
<上一题 目录 下一题>
热门 试题

单项选择题
Computers are beneficial because they ______.
A．eliminate price errors
B．give itemized printout to the customer
C．save time in the checkout lane and help control inventory
D．all of the above
单项选择题
A possible title for this article could be ______.
A．Animals and Food
B．The Benefits of the Universal Product Code
C．Production Made Easy
D．Stripes in Food Advertising
相关试题