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發表於:2019-10-19
問題詳情:如圖將兩塊三角板的直角頂點重疊在一起,∠DOB與∠DOA的比是2:11,則∠BOC= .【回答】70°【解答】解:設∠DOB為2x,∠DOA為11x;∴∠AOB=∠DOA﹣∠DOB=9x,∵∠AOB=90°,∴9x=90°,∴x=10°,∴∠DO...
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發表於:2019-11-05
問題詳情: Readingisprobablyoneofthemostbeneficialandeasy-to-doactivitiesthatamancando.Itisdescribedasajourneythatstartsastheopeningofapage,andfinishesasthelastpageistur...
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發表於:2017-12-20
TargetDOAestimationmethodusingMIMOarrayResearchofSuper-resolutionDOAEstimationAlgorithmofWidebandSignal;SignalSubspaceWidebandFocusingDOAEstimationAlgorithmBasedonG-SOrth...
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發表於:2017-07-16
經典語錄...
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發表於:2021-11-05
問題詳情: —It’sabitcold.Wouldyoumindmy allthewindows? —Doasyoulike,please. A.close B.willclose ...
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發表於:2022-08-07
問題詳情:如圖,ABCD為正方形,O為對角線AC、BD的交點,則△COD繞點O經過下列哪種旋轉可以得到△DOA()A.順時針旋轉90° B.順時針旋轉45°C.逆時針旋轉90° D.逆時針旋轉45°【回...