Since 1980s, people have studied how to improve the information （） of barcode symbol._精华吧

Since 1980s, people have studied how to improve the information （） of barcode symbol.

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Since 1980s, people have studied how to improve the information （） of barcode symbol.

A.amount

B.density

C.number

D.crowdedness

正确答案：density

Tag：现代邮政英语时间：2022-01-30 21:01:05

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