逻辑“或”用or表示，作用是扩大检索范围，提高查准率 A、正确 B、错误 - 查题网

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成人高等教育 / 口腔内科学

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逻辑“或”用or表示，作用是扩大检索范围，提高查准率

A、正确
B、错误

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口腔内科学

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