A-A+

Codes are scanned by ______.A．the checkout cle

2022-08-01 22:10:32 问答库阅读 167 次

问题详情

Codes are scanned by ______.
A．the checkout clerk
B．the customers themselves
C．a laser beam of light
D．the cash register

正确答案：C
解析：根据第一段第四句"The 'scanner', which reads the lines of code, is a small laser beam of light", 就可以肯定[C]是正确答案。