下列哪種在故障下保護開關正確動作,為保持系統穩定運行,可以采取切荷?
A、300MW發電機跳閘D
解答過程:根據《電力系統安全穩定導則》(DL/T755—2001)第3.2.2條第b款可知,當發生任一段母線故障時,保護、開關及重合閘正確動作,應能保持穩定運行,必要時允許采取切機和切負荷等穩定性措施。
AtrendthatoccursatthesametimewiththemovementtotheSouthandtheWeastoftheUnitedStatesis________.
He________hispoorjudgment________JetLag.
TheMississippi,whichissometimescalled________,hasplayedavitalroleinthehistoryoftheUnitedStates.
英語翻譯:振興中華
Wordsthatareidenticalonlyinspellingbutdifferentinsoundandmeaningarecalled______.