题目内容
尺寸界线一般与尺寸线垂直，必要时才允许倾斜，并应超出尺寸线终端2~3mm
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In computer network, people can share files and documents, printers and scanners,stereos and game systems, CD burners and internet connection.
用PubMed数据库检索发表在期刊《Science》上的文章,应该用 ( )
Local Area Network(LAN) is used to describe large scale networks that extend across areas,cties and even countries around the globe.
PubMed中,如果要把检索结果保存到本地电脑的磁盘中,应选用的方式为 ( )
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