- 問題詳情:在平行四邊形ABCD中,∠B=60°,那麼下列各式中,不能成立的是()A.∠D=60° B.∠A=120° C.∠C+∠D=180° D.∠C+∠A=180°【回答】D【考點】平行四邊形的*質;多邊形內角與外角.【專題】壓軸題.【分析】由於平行四邊形中相鄰內角互補,對角相等,而∠A和∠C是對角,而...
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- 1、Theaverageeggweight,thebodyweightatD30,thebodyweightatD60andtheactivityofGPTatD60werethemaintraitsforthecontribution.2、ATestStudyOnElectrochemicalMechanicalFinishingD60TungstenSteel3、ThemainreasonofceramictoolWearingiscomingoffthehardgrainduring...
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