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2020мӋӋI(y)P(gun)֪Rģԇ}ߣ_2

ԴԇW(wng)  [2020825]   С

𰸲

һx}

1

_𰸡 A

𰸽 @urָ(bio)ؔ(w)Чurָ(bio)xA_;(zhn)Թurָ(bio)(jng)IQurָ(bio)L(fng)Uurָ(bio)ڹЧurָ(bio)xBCDų

ԓ}ᘌI\֪RcMпˡ

2

_𰸡 C

𰸽 (yng)~D(zhun)Δ(sh)=dN/(yng)~ƽ~=(200090%)/[(500+700)/2]=3()

(yng)~D(zhun)씵(sh)=360/(yng)~D(zhun)Δ(sh)=360/3=120()

ԓ}ᘌI\֪RcMпˡ

3

_𰸡 C

𰸽 ƽӱ=ƽYa(chn)/ƽؓ(f)ƽYa(chn)=2250=500(fԪ);Ya(chn)D(zhun)Δ(sh)=N/Ya(chn)=2000/500=4

ԓ}ᘌI\֪RcMпˡ

4

_𰸡 C

𰸽 xA^ٷֱؔ(w)ڱ^ؔ(w)ĻA(ch)ϰl(f)չġxBD^ؔ(w)DZ^ڈеĔ(sh)(j)^ٷֱؔ(w)tDZ^Ŀٷֱȵ׃ԴˁДI(y)İl(f)չڅݡ

ԓ}ᘌؔ(w)CϷ(Ű)֪RcMпˡ

5

_𰸡 D

𰸽 ӳI(y)@ؔ(w)ʣYa(chn)ɖ|(qun)ʡNëNۃʡɱMýʵ

ԓ}ᘌ@֪RcMпˡ

6

_𰸡 D

𰸽 لӱ=(2+68+80+50)750=0.267

ԓ}ᘌڃ֪RcMпˡ

7

_𰸡 D

𰸽 Nۮa(chn)Ʒ߀(yng)~yдُI̶Ya(chn)ӰӱʡxDyдُIЃrCȯYa(chn)l(f)׃ӱҲ׃

ԓ}ᘌڃ֪RcMпˡ

8

_𰸡 B

𰸽 (qun)˔(sh)=1(1-Ya(chn)ؓ(f))Ya(chn)ؓ(f)Խߣ(qun)˔(sh)Խ

ԓ}ᘌLڃ֪RcMпˡ

9

_𰸡 D

𰸽 ɖ|(qun)Խؓ(f)ռıʾԽСI(y)ؔ(w)L(fng)UҲԽС߀(w)Խ(qun)˔(sh)ǹɖ|(qun)ʵĵ(sh)ДY(ji)cɖ|(qun)෴

ԓ}ᘌLڃ֪RcMпˡ

x}

1

_𰸡 ABDE

𰸽 }鑪(yng)~D(zhun)֪Rc(yng)~(yng)δ۳~(zhn)Ľ~xCf_

ԓ}ᘌ(yng)~D(zhun)ʡ֪RcMпˡ

2

_𰸡 ABDE

𰸽 ɱMÃʌګ@ؔ(w)ʡ

ԓ}ᘌI\֪RcMпˡ

3

_𰸡 CE

𰸽 ìF(xin)߀ؓ(f)Nۮa(chn)Ʒyд֧šYYa(chn)D(zhun)ָ(bio)ܾٛyнʹYa(chn)N~׃rYa(chn)D(zhun)ָ(bio)½

ԓ}ᘌI\֪RcMпˡ

4

_𰸡 ABCD

𰸽 }l(f)չ֪RcϢLʲI(y)l(f)չؔ(w)ָ(bio)

ԓ}ᘌl(f)չ֪RcMпˡ

5

_𰸡 BE

𰸽 }؛D(zhun)֪Rc؛D(zhun)=N۳ɱ/ƽ؛

ԓ}ᘌ؛D(zhun)ʡ֪RcMпˡ

6

_𰸡 ABCD

𰸽 xEڶŰwϵҪؔ(w)

ԓ}ᘌؔ(w)CϷ(Ű)֪RcMпˡ

7

_𰸡 AE

𰸽 (dng)Ya(chn)ؓ(f)rДلYa(chn)ؓ(f);(dng)لYa(chn)ؓ(f)rtДYa(chn)ؓ(f)

8

_𰸡 ACE

𰸽 a(chn)(qun)=ؓ(f)/ߙ(qun)Ya(chn)ؓ(f)=ؓ(f)/Ya(chn)(qun)˔(sh)=Ya(chn)/ߙ(qun)xA(qun)˔(sh)-1=(Ya(chn)-ߙ(qun))/ߙ(qun)=a(chn)(qun);xCYa(chn)ؓ(f)ʡ(qun)˔(sh)=(ؓ(f)/Ya(chn))(Ya(chn)/ߙ(qun))=ؓ(f)/ߙ(qun)=a(chn)(qun);xEɖ|(qun)c(qun)˔(sh)鵹(sh)xACE_

ԓ}ᘌLڃ֪RcMпˡ

9

_𰸡 ABC

𰸽 xDEߙ(qun)(ni)l(f)׃

ԓ}ᘌLڃ֪RcMпˡ

2020мӋӋI(y)P(gun)֪Rԇ} ԇ
ȼ v}+ǰģM
2020мӋӋՓc(w)ԇ} ԇ
ȼ v}+ǰģM

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