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

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

admin2010-07-07  51
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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