The figures printed below the stripes are codes of the producer and the product. The scanner reads the product information thro

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问题 The figures printed below the stripes are codes of the producer and the product.
The scanner reads the product information through a camera,

选项 A、Right
B、Wrong
C、Doesn’t say

答案B

解析 第一段"The ’scanner’,…is a small laser beam of light."
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