\rt&vwlEi.x\rIXx+2x(y*2)=34,2\r5yEz=:.\rb'=10\r21-1,*:n|}6r~0r.\r>bx(1xz5/)\r22-1=0-3/4+2=3\r22-2:=-4+3+20=19\r22-3.SMH5C=-14^15-5=-4\r5EBK=-3*x(-5-7+2)=-3gx(-10)=\r22-477\r>
x(2xz21/)\r5EDE=4CD.CD=4,\r..DE=1,\rCE=3.\r'J-DCF3-BCEm$900l\r23-1,CFMCET.\rDM63,CD=4,\r23.2"-="+5=+42=5\r5M"DCF3&KE0l,\r"CBE=/CDF,\rvzBEC=zDEG,\r/.zDGE=^BCE=909,\r23-3BGLDF.\r5Emm2015o?x,My\rS0x+20v=7000\r5l'J,\r(120x4-40y=7000+8600\r¡E|V=80,\r|)'=150\r24-1¤E¥¦201§Xfc®98Ht9®80*8,3^81508;\rII12EvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\r5Em¨2016^?©ªm«¬n®¯°±²³´WM\rµ¶·3l\n"'4=200,\rIn<3m\r5lME25O.\rW=120m*40n=120m*40200-m}=80m+8000,\r3¸W?¹film?º»¼½»,4¾¿E=509J,W?¹À\rS/WH=8050+8000=12000ÁMÂ.\r24-2.ÃE2016o¨Àį°7ÅÆÇ9gl2000M.\r1212