}ĿijУeЌW(xu)Уۼۇ}vِijͬW(xu)xւĵ÷M(jn)нy(tng)Ӌ(j)LƳDʾĵ÷֗lΈDĂ(g)Дࣺ
ٹ10˵6
ڵ5ֺ7ֵ˔(sh)һӶࣻ
8xֵijɿ8
ܹ25xօِ
_()
A. 1(g) B. 2(g) C. 3(g) D. 4(g)
ĿД(sh)W(xu) Դ }ͣ
}Ŀ֪ABCƽֱ(bio)ϵеλDʾ
1ABCP(gun)ySQA B1C1Bc(din)Č(yng)c(din)B1(bio)
2ySһc(din)PʹPBCḶ
鿴𰸺ͽ>>
ĿД(sh)W(xu) Դ }ͣ
}ĿW\(yn)֪RСͱW(xu)W\(yn)֪R˽̶M(jn)һ{(dio)y(tng)Ӌ(j)AϤB˽^Cһ˽⣮D1͈D2ɼ(sh)(j)LƵăɷĽy(tng)Ӌ(j)DՈ(j)DṩϢ}
1ԓжW(xu)
2ڗlΈDʾһ˽IJa(b)
3νy(tng)Ӌ(j)DӋ(j)˽^(yng)ĈAĽǵĶȔ(sh)
4ȫ꼉1000ͬW(xu)Ոȫ꼉W\(yn)֪R˽^ČW(xu)˔(sh)
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ĿД(sh)W(xu) Դ }ͣ
}Ŀ҂֪ʽͷ?jn)?sh)ܶc(din)ȷ?jn)?sh)Ļ|(zh)҂õ˷ʽĻ|(zh)ȷ?jn)?sh)\(yn)㷨t҂õ˷ʽ\(yn)㷨tȵȣСW(xu)ѷӱȷĸСķ?jn)?sh)?jn)?sh)Ƶ҂ѷʽĴΔ(sh)СڷĸʽĴΔ(sh)ķʽQʽ֮Qٷʽκһ(g)ٷʽԻʽcʽĺ͵ʽ磺
(1)зʽʽǣ________(̖)
(2)ٷʽʽcʽĺ͵ʽ
________________
(3)ٷʽʽcʽĺ͵ʽ
__________________.
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ĿД(sh)W(xu) Դ }ͣ
}ĿD1RtACB УC=90c(din)DACCBD=A^ADc(din)ĈAĈAOABϣ
1ֱߺ͈AҎ(gu)ڈD1ЮODEúɫˮPѾl
2ДBDֱc1ġOλP(gun)ϵCĽY(ji)Փ
3O(sh)OABc(din)EBDE^c(din)EEFBCF(xin)鴹c(din)DǾACSָc(din) =
D2ԇf߅DEFCΣ
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