һ
̰һԪһηԪһη̽MԪһη̽Mͷʽ̡ÿN̶ضĽⷨһԪһη̳Ҏ(gu)Ľⷨδ֪(xing)Ƶʽ߅(sh)(xing)Ƶʽ߅@dzҎ(gu)ⷨwМy(c)ԇкܶǿÔ(sh)˼}Ԫһη̽MĽⷨǴ뷨ԪМy(c)ԇеĶԪһη̽MҪwʽҪD(zhun)һԪη̣ⷨôų˼
1ijڄ(dng)Tü҃ɂ(g)_չr(nng)匍(sh)˲Ӗ(xn)ɽҾ5λÿſ10ҽÿſ9ɽҮ(dng)¹ekԓӖ(xn)27ΣÿӖ(xn)o̓ϯ(dng)Ӗ(xn)1290˴ΡҮ(dng)¹ek˶ٴ@(xing)Ӗ(xn)?( )
A.8 B.10
C.12 D.15
[]D
[]@}ЃɽҾ5λtҿ105=50ҽҿ95=45(dng)Ӗ(xn)27Ӌ(j)1290˴ÿӖ(xn)o̓ϯtҽӖ(xn)Δ(sh)؞ż(sh)tӖ(xn)˔(sh)β(sh)5҄tֻӖ(xn)Δ(sh)攵(sh)Ă(g)x(xing)ֻD(xing)攵(sh)
̆}̆}Ͳ̽M̵ĽⷨͨǴų˼(sh)˼еżԺβ(sh)̽Mַ֞(g)δ֪(sh)wɷN(g)δ֪(sh)ҪԪD(zhun)ɲ̣ò̵ĽⷨwҪx0ȥϵ(sh)(f)sδ֪(xing)
2ij܇Sa(chn)N܇ͮa(chn)3cͮa(chn)6֮͵ڼͮa(chn)4ͮa(chn)cͮa(chn)2֮͵ڱͮa(chn)7tסͮa(chn)֮Ȟ飺( )?
A. 543 B. 432
C. 421 D. 321
[]D
[](sh)˼3+6=4ףüב(yng)3ı(sh)^x(xing)ֻD(xing)M
3Ќ99(g)ObM(jn)ɷNbУbÿ(g)b12(g)OСbÿ(g)b5(g)Oʮ(g)ӄbɷNbق(g)?( )
A.3 B.4
C.7 D.13
[]D
[]żԺβ(sh)O(sh)x(g)Сy(g)t12x+5y=99x=7y=3(ȥ)x=2y=15y-x=13
4ijͯˇg(sh)Ӗ(xn)5ٽ̎6̎Ӗ(xn)ČеٌW(xu)TW(xu)T76˷քeƽطֽo(g)ώI(lng)܉ÿλώČW(xu)(sh)|(zh)(sh)ڌW(xu)˔(sh)p٣Ӗ(xn)ֻ4ٽ̎3̎ÿ̎ČW(xu)(sh)׃ôĿǰӖ(xn)߀ʣW(xu)T?( )
A.36 B.37
C.39 D.41
[]D
[]O(sh)ÿλώxώyt5x+6y=76ͨ^żжxż(sh)|(zh)(sh)x=2y=11߀ʣW(xu)T42+311=41()
5IN؛371軨M(fi)3.15Ԫ;4101軨M(fi)4.20ԪIһ軨M(fi)X( )?
A.1.05Ԫ B.1.40Ԫ
C.1.85Ԫ D.2.10Ԫ
[]A
[]ⷨһ@}漰ʽĺ׃O(sh)N؛Ćr(ji)քeABCt(j)}
3A+7B+C=3.15
4A+10B+C=4.20
һʽ3õ 9A+21B+3C=33.15
ڶʽ2õ 8A+20B+2C=24.20
σʽpɵ A+B+C=1.05Ԫ
ⷨ(j)}⣬
3A+7B+C=3.15
4A+10B+C=4.20
ϵ(sh)(f)sBxֵ0D(zhun)ɶԪһη̽M֮A=1.05C=0tA+B+C=1.05Ԫ
@Ƿ̆}ĶN}(du)(yng)}Ì(du)(yng)ķ