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贵州省大方县2023~2024学年度高二秋季学期期末考试(4258B)-物理试卷答案

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(他自信地带请用现在分词、过去分词或形容词改写下列句子者灿烂的微笑，拾头看着我，毫不犹像地向起跑线3.Gabriellookedoverthegate.HecouldseeayellowcartwhichwasloadedwithfurnitureandhedDavidmovduptothestarting走去

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)Assoonasthegunshot,theotherrunnersTheyweretiredandhungry.rushedforwardlikeno,andDavidtriedhisbesttokeepupwiththem.Heranwithstrange5.Megthoughtthatherclassmateswouldconsidermovementbutsteadypace.Althoughhegraduallyhertobealazygirl.Shesatonthefloor.Shefarbehindothers,hestillkeptgoing.Seeinghisfelthopelessandworried.determinedeyes,Ifeltproudofhim.Whenhefinallygottothefinishingline,allthestudentsapplaudedhimwithpraisesandadmiration.David请使用独立结构改写下列句子wassohappythathecriedwithexcitement.4.6.Hecriedandhisblueeyeswasshiningbehind(虽然他不是冠hisglasses.军，但在我们心中他最优秀

)Writing27.AswehuggedRuthgood-bye,shesaidtome.Westartedtomeetregularlytodrawupourplans.1.(尽Hertearswasshininginhereyes.管我想和他充分分享我的想法)，Ifailedtodoso(担心我会拖他后腿).Ijustkeptnoddingwhenheaskedme请用无灵主语句改写下列句子whetheritisallrighttodothiswayorthatway.I8.Mariafeltunhappythatmorning.thoughtitwasimpossibletopersuadehimintoacceptingmyviews,soIdidn'twanttowasteour9.Ihaveneverthoughtofsuchanidea.timetodiscuss.Istartedtowaittoleaveimmediatelywearrivedattheplace,andsodidhe.2.10.Hewastooterrifiedtomove.是希望展示日能早点到来

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贵州省大方县2023~2024学年度高二秋季学期期末考试(4258B)-物理第一部分

贵州省大方县2023~2024学年度高二秋季学期期末考试(4258B)-物理

A、B、C+2q、q、-q5.如图所示,正三角形ABC的三个顶点A、B、C分别固定有十2q、一q、q的点电,FABCAB、BC、CA的中点,O为三角形的中心,取无穷远处电势为零,则下列说法正确的是AB、BC、CAA.0点电势一定不为零B.O点电场强度一定为零C.F点比G点电场强度小D.H点比G点电势高B

贵州省大方县2023~2024学年度高二秋季学期期末考试(4258B)-物理第二部分（待更新）

14.(13分)如图所示,一真空示波管的电子从灯丝K发出(初速度不计),经灯丝与A板间的加速电场加速,从A板中心孔沿中心线KO射出,然后进人两平行金属板M、N形成的偏转电场中(偏转电场可视为匀强电场),电子进入M、N间电场时的速度方向与电场方向垂直,金属板M、N之间的距离为d。电子经过偏转电场后飞出电场并打在荧光屏上的P点,P点到O点之间的距离为3d。已知加速电压为U0,M、N板长是2d,偏转电场的右端到荧光屏的距离为6d,电子的质量为m,电荷量为e,不计电子重力,求: