- 问题详情: —It’sabitcold.Wouldyoumindmy allthewindows? —Doasyoulike,please. A.close B.willclose C.closing D.toclose【回答】C知识点:非谓语动词题型:选...
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- TargetDOAestimationmethodusingMIMOarrayResearchofSuper-resolutionDOAEstimationAlgorithmofWidebandSignal;SignalSubspaceWidebandFocusingDOAEstimationAlgorithmBasedonG-SOrthogonalMethod利用DOA信息,初始化自适应波束成形的权值。FrequencyandDOAestimationusin...
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- 问题详情:如图将两块三角板的直角顶点重叠在一起,∠DOB与∠DOA的比是2:11,则∠BOC= .【回答】70°【解答】解:设∠DOB为2x,∠DOA为11x;∴∠AOB=∠DOA﹣∠DOB=9x,∵∠AOB=90°,∴9x=90°,∴x=10°,∴∠DOB=20°,∴∠BOC=∠COD﹣∠DOB=90°﹣20°=70°;知识点:与三角形有关的角题型:填空题...
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- 问题详情: Readingisprobablyoneofthemostbeneficialandeasy-to-doactivitiesthatamancando.Itisdescribedasajourneythatstartsastheopeningofapage,andfinishesasthelastpageisturned.____36____Itisthroughreadingthatapersonisabletodiscovernewideas,concepts,pla...
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- 问题详情:如图,ABCD为正方形,O为对角线AC、BD的交点,则△COD绕点O经过下列哪种旋转可以得到△DOA()A.顺时针旋转90° B.顺时针旋转45°C.逆时针旋转90° D.逆时针旋转45°【回答】C【考点】旋转的*质.【专题】几何图形问题.【分析】因为四边形ABCD为正方形,所以∠CO...
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