A54的知识精选

若∠A=35°16′,则其余角的度数为A.54°44′   B.54°84′   C.55°44′   D.1...
问题详情:若∠A=35°16′,则其余角的度数为A.54°44′   B.54°84′   C.55°44′   D.144°44′【回答】A知识点:角题型:选择题...
等比数列前n项和为54,前2n项和为60,则前3n项和为(   )A.54             B.64 ...
问题详情:等比数列前n项和为54,前2n项和为60,则前3n项和为(   )A.54             B.64              C.                 D.【回答】解析:∵(S2n-Sn)2=Sn·(S3n-S2n),...
我国是个多民族的国家,共有少数民族(      )A.54个           B.55个         ...
问题详情:我国是个多民族的国家,共有少数民族(      )A.54个           B.55个              C.56个           D.57个【回答】B知识点:民族题型:选择题...
某几何体的三视图如下图所示,则该几何体的表面积为(   )A.54      B.60     C.66   ...
问题详情:某几何体的三视图如下图所示,则该几何体的表面积为(   )A.54      B.60     C.66     D.72【回答】B知识点:空间几何体题型:选择题...
设,数列是以3为公比的等比数列,则的值为(  )A.54        B.55        C.80   ...
问题详情:设,数列是以3为公比的等比数列,则的值为(  )A.54        B.55        C.80          D.81【回答】C知识点:数列题型:选择题...
TomgoeseverywherewithCatherineGreen,a54-year-oldsecreta...
问题详情:TomgoeseverywherewithCatherineGreen,a54-year-oldsecretary.Hemovesaroundherofficeatworkandgoesshoppingwithher."Mostpeopledon'tseemtomindTom,"saysCatherine,whothinksheiswonderful."He'smyfou...
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