![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＝ ．]( "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＝ ．")
- 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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![DOA造句怎么写]( "DOA造句怎么写")
- 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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![—It’sabitcold.Wouldyoumindmy allthewindows? —Doa...]( "—It’sabitcold.Wouldyoumindmy allthewindows? —Doa...")
- 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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![Readingisprobablyoneofthemostbeneficialandeasy-to-doa...]( "Readingisprobablyoneofthemostbeneficialandeasy-to-doa...")
- 问题详情： Readingisprobablyoneofthemostbeneficialandeasy-to-doactivitiesthatamancando.Itisdescribedasajourneythatstartsastheopeningofapage,andfinishesasthelastpageisturned.____36____Itisthroughreadingthatapersonisabletodiscovernewideas,concepts,pla...
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