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        1. 11ݣM8֣ijҐ(i)W(xu)(sh)W(xu)n}W(xu)(x)СMĻ(dng)}ǡy(c)W(xu)УUĸ߶ȡԓn}СMо(bo)IJӛ䛃(ni)ݣ
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          y(c)W(xu)УUĸ߶


          l(f)ӛ
          Сtվh(yun)̎U픶y(c)Ǟ30
          СҏСtλUǰM(jn)12 mU픶y(c)Ǟ60
          СtҺСĿ߶1.6 m
          Ո(qng)(j)ӛ䛵ϢӋ(j)UAGĸ߶ȣȡ1.7Y(ji)ɂ(g)Ч(sh)֣
          ⷨһO(sh)BDx cmABx cm
          RtABCcos30㣽 4
          x6
          AB6                              6
          AG61.661.71.612m      8
          ⷨߡACB30ADB60㣬CAD30㣽ACB60
          ADCD12                           2
          RtAADBsin60㣽    4
          AB6                              6
          AG61.661.71.612m      8
          (x)(c)ϵд
          P(gun)(x)}

          ĿД(sh)W(xu) (li)ԴԔ x}

          D3һСf·AµB̎ߵC̎r(sh)y(c)ӰCDL(zhng)1(dng)^m(x)ǰߵD̎r(sh)y(c)ô˕r(sh)ӰDEһE·AǞ45º֪Сfߞ1.5ô·Aĸ߶AB
          A3B4.5C6D8

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          ĿД(sh)W(xu) (li)ԴԔ }

          (6)ij̈(chng)(zhn)ԭИݵİȫуAбԭ(li)40ºp35º
          ֪ԭABL(zhng)5m{(dio)ĘռCDжL(zhng)(Y(ji)_0.1m(sh)(j)
          sin40º0.64cos40º0.77sin35º0.57tan35º0.70)

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          ĿД(sh)W(xu) (li)ԴԔ }

          2011?Iݣ߅L(zhng)6cmĵ߅һ߅ϸߵL(zhng)Ȟ

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          ĿД(sh)W(xu) (li)ԴԔ }

          10֣DęMΣˮAB± ָUֱ߶cˮƽȵıȣAB20 mߞ1.7 mСվڴAc(din)y(c)ø߉늾Uc(din)DǞ30㣮֪CB30 m߉늾UCDĸ߶ȣY(ji)

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          ĿД(sh)W(xu) (li)ԴԔ }

          DСA̎T(mn)ǰһڳһl·lABAlС·. F(xin)һl·AC·l. Сy(c)ACD=30ºABD=45ºBC=50m. Ո(qng)СӋ(j)ҵ·lľxADL(zhng)ȣ_0.1m(sh)(j).

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          ĿД(sh)W(xu) (li)ԴԔ }

          DRtABCC90A30EABһc(din)AEEB41EFACFBY(ji)FBttanCFBֵ     

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          ĿД(sh)W(xu) (li)ԴԔ }

          DһL(fng)һô(sh)x̎۔൹B۔̎c(din)(sh)Aھ(sh)C 12m̎y(c)áBAC=48tԭ(sh)߼s   m(λС(sh))

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          ĿД(sh)W(xu) (li)ԴԔ }

          2011•ݣӋ(j)㣺
          ڻ(jin)

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