达西定律是作为估算油井产量,分析油井产量影响因素的基本定律。
正确
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Inasecond-handbookshop,Billycameacrossabookwhichhethoughtwascertainlya____edition.
ThissignsinAmericarepresents:
Rulesandregulations
Icanstillrememberthesittingroom____Iusedtositintheevening.
Howmanytypesofbusinessmeetings?