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  2. Widely Used Consumption Blender For Ore Exploiting From Shanghai

Widely Used Consumption Blender For Ore Exploiting From Shanghai

b. Bar codes were first used in 2000. c. Bar codes can be read by optical scanners. d. Bar codes cannot be used as a marketing research tool. e. None of these statements about bar codes is true. ANS: C. Bar codes are the same as universal product codes. They were first developed in 1974. Also bar codes can be used in single-source research.

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