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發表於:2014-11-30
Linux系統中,source命令通常用“。”來代替,是一個點命令,與一般的命令有所不同,下面小編就給大家介紹下Linux中source命令的用法。用法:sourcefilename或。filenamesource命令是bashshell...
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發表於:2019-03-10
水是生命之源WateristheSourceofLifeWaterisveryimportant.Itisthesourceoflife.Everythingintheworldcan’tlivewithoutwater.Theproportionofwaterandaperson’sweightisabout70%.Pe...
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發表於:2019-03-10
Asthesourceoflife,waterisindispensable(不可缺少的)tohumanbeings.Peopleconsumemuchwaterinproductionanddailylife.Agricultureandindustryaccountformostofmankind'swaterusag...