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  • 正確率,積分給!

    正確率,積分給!
    1.有一塊長(zhǎng)60厘米,寬20厘米,高5厘米的木快,按它的長(zhǎng)分成三段,求:這三段的表面積和.
    2.已知一角的余角比它的2倍大15度,求這個(gè)角的補(bǔ)角.
    3、某工廠(chǎng)加工一批零件,需200小時(shí)完成,工作了60小時(shí)后,由于技術(shù)革新,工作效率提高了25 %,還需要多少小時(shí)完成任務(wù).
    4、某銀行把若干人民幣分成兩部份分別貸款給甲、乙兩個(gè)經(jīng)營(yíng)者,年利率分別為4%和5%,一年后銀行獲得兩部分利息共計(jì)4.4萬(wàn),如果把兩個(gè)利率交換可增加0.2萬(wàn)元,問(wèn)甲、乙兩人各貸款多少元?
    5、某班學(xué)生春游分組活動(dòng)中,每組6人,則多出3人,若每組8人,則有一組少5人,問(wèn)該班學(xué)生共多少人,應(yīng)該分成幾組?
    6.請(qǐng)根據(jù) 20分之x+18分之x+4=1 編寫(xiě)一道應(yīng)用題.
    ( )6.I’d like to _____ a teacher.
    A.be B.do C.is D.are
    ( )7.Mr.Wang _____ work at 8:00a.m.every day.
    A.start B.starts C.starting D.started
    ( )8.I want to be a policeman ______ I like to catch bad guys.
    A.so B.because C.for D.as
    ( )9.--Do you like your job?--Yes,I _____.
    A.do B.like C.likes D.did
    ( )10.My father likes his job and he usually makes sick people _______.
    A.better B.well C.good D.best
    ( )11.She usually does some washing on _______.
    A.the evening B.the morning C.Sundays D.night
    ( )12.Would you like to put _____ fires?
    A.out B.on C.up D.down
    ( )13.The businessman goes into the bank _____ money.
    A.to B.about C.of D.for
    ( )14.Sue is writing a diary _____ her trip to Suzhou.
    A.of B.with C.to D.about
    ( )15.--How do you get to school?-- __________.
    A.Take a bus B.In my bike C.On foot D.On the bus
    ( )1.It will take you half an hour ______ get there.
    A.to B.on C.in D.off
    ( )2.Mum spends one hour ______ food every day.
    A.to cook B.cook C.cooking D.cooked
    ( )3.The power station is ____ far away from our house.
    A.quite B.to C.quiet D.very much
    ( )4.Jack ____ the train to visit his friends.
    A.by B.get on C.take D.takes
    ( )5.I see _____ flowers when I walk around the park.
    A.a B.any C.plenty of D.a little
    ( )6.It took us _____ than two hours to get to the stop.
    A.more B.much C.quite D.many
    ( )7.There are always a lot of ____ in the park at weekends.
    A.woman B.man C.people D.child
    ( )8.Can you find out how long your mother _______ doing housework?
    A.spends B.pays C.takes D.costs
    ( )9.Would you please _____ me the way to the cinema?
    A.told B.telling C.to tell D.tell
    ( )10.Are snacks good ______ bad for us?
    A.to B.or C.and D.also
    英語(yǔ)不要ABCD亂選~我要正確率,
    1、畫(huà)線(xiàn)段AB=3厘米,延長(zhǎng)AB到C,使BC= AB,再延長(zhǎng)CA到D使CA=AD,并計(jì)算CD的長(zhǎng)度.
    2.一個(gè)角的補(bǔ)角加上60°的余角后,等于這個(gè)角的余角的5倍,求這個(gè)角的補(bǔ)角.
    3、在一個(gè)長(zhǎng)、寬、高分別為2厘米,3厘米,4厘米的長(zhǎng)方體正中表面放一個(gè)邊長(zhǎng)為1厘米的正方體,則此組合圖形的表面積是多少?
    4、∠ a與∠ b互補(bǔ),∠a 比∠b 大26°,求∠a 和∠b .
    5、已知線(xiàn)段AB = 18 cm,M是AB中點(diǎn),C是AB上一點(diǎn),且AC = 5BC,求MC的長(zhǎng).
    英語(yǔ)人氣:863 ℃時(shí)間:2020-03-31 14:06:07
    優(yōu)質(zhì)解答
    我全部都能解答,加我百度HI,我一一解答給你
    1.分成三段,也就是多了4個(gè)面,
    因?yàn)閷捄透卟蛔?這4個(gè)面面積都一樣
    三段木塊的表面積=原木塊的表面積+4倍的寬乘以高
    (60*20+60*5+20*5)*2+20*5*4=3600平方厘米
    2.設(shè)這個(gè)角為x度
    x+(x*2+15)=90
    x=25度
    這個(gè)角的補(bǔ)角是180-25=155度
    3.設(shè)這批零件為1,那么每小時(shí)工作量就是1/200
    工作效率提高后的每小時(shí)工作量就是1/200*1.25=1/160
    共走60小時(shí)的工作量是60*1/200=3/10
    剩余工作量是1-3/10=7/10
    剩余時(shí)間就是(7/10)/(1/160)=112小時(shí)
    4.設(shè)甲貸款x萬(wàn)元,乙貸款y萬(wàn)元
    那么:
    4%*x+5%*y=4.4
    5%*x+4%*y=4.4+0.2
    得到結(jié)果x=60萬(wàn)元,y=40萬(wàn)元
    5.設(shè)要分成x組
    那么:
    6x+3=8x-5
    得出x=4
    總?cè)藬?shù)=4*6+3=27
    所以要分成4組,一共有27個(gè)學(xué)生
    6.這個(gè)沒(méi)做
    英語(yǔ)的
    B C A A D C A B D C B B B A C A D C D B
    補(bǔ)充的數(shù)學(xué)馬上送上
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