hand+job+cum
答：视频标签：业余公司签署口头杂交青少年网络摄像机 相关标签：国产业余自慰业余假阴茎青少年性教育死撑国产带钢业余视讯金发夫妇少女handjob cumshot高潮暨民营大声尖叫 相关类别：网路摄影机 好像就是这个意思～
答：I have been engaged in Taobao marketing job for two years, having strong communication skills, extremely strong hardworking spirit, and keen interest in computer networks. In addition I am pursuing Computer Management major in adult college now, and hope to enhance my skills in the ...
答：inltively 2.things purchused 3.more access 4.are less 5.provide 6.they enjoy 7.access to 8.separable things 9.the wild world 10.harmony 11.C)She enjoys staying in Washington。12.C)The director’s opinion of her work。13.D)Avo id excessive physical training。14.C)Whether ...
答：1,爱迪生的经典名言：“Genius is one percent of inspiration and ninty-nine percent of perspiration.”（天才是百分之一的灵感和百分之九十九的汗水。）事例：当有人问他在发明灯泡的1万次失败期间是怎样坚持下去的时候，他说，在这个过程中他从未失败过；相反，他找到了1万种无效的方法。他一生中...
答：a job part time to be able to bay the bills, which would teach him a lot. In schoolhouse, all do the same things together most of the time. They have rolls must follow. All the students around the same age no one has more experiences then others. On the other hand,...
网友评论：
冉贞18441808980：
运用乘法公式计算:(a+b+c)(a - b - c)+(a+b+c)². -
39587通苛
：[答案] =(a+b+c)(a-b-c+a+b+c) =2a(a+b+c)
冉贞18441808980：
若a,b,c是非零实数,并满足(a+b - c)/c=(a - b+c)/b=( - a+b+c)/a,且x=(a+b)(b+c)(c+a)/abc求x的值 -
39587通苛
：[答案] 设x=(a+b-c)/c=(a-b+c)/b=(-a+b+c)/a 则有 a+b-c=cx a-b+c=bx -a+b+c=ax 三式相加有(a+b+c)=(a+b+c)x 则有 a+b-c=c a-b+c=b -a+b+c=a a+b=2c (1) a+c=2b (2) b+c=2a (3) (1)-(2) 得 b-c=2(b-c) 所以有b-c=0 即b=c 同理可得 a=b=c 则x=(a+b)(b+c)(a+...
冉贞18441808980：
a+a+a+b=21 a+b+b+b=23 a是几?b是几?最好要说出道理. -
39587通苛
：[答案] a+a+a+b=21 3a+b=21 (1) a+b+b+b=23 a+3b=23 (2) 由(1)*3-(2) 9a+3b-a-3b=63-23 8a=40 a=5 b=6
冉贞18441808980：
已知abc不等于0且a+b+c=0,则a(1/b+1/c)+b(1/a+1/c)+c(1/a+1/b)的值为?已知abc不等于0且a+b+c=0,则a(1/b+1/c)+b(1/a+1/c)+c(1/a+1/b)的值为? -
39587通苛
：[答案] a(1/b+1/c)+b(1/a+1/c)+c(1/a+1/b) =(a+b)/c+(b+c)/a+(c+a)/b =(-c)/c+(-a)/a+(-b)/b =-3
冉贞18441808980：
已知Ia - b+2I+Ib+3I互为相反数,求a与b的值 -
39587通苛
：[答案] 知Ia-b+2I+Ib+3I互为相反数,求a与b的值 a-b+2 = 0 b+3 = 0 b= -3 a = b-2 = -3-2 = -5
冉贞18441808980：
(a+b+c)的立方 -
39587通苛
：[答案] (A+B+C)^3 =A^3+3A(B+C)^2+3A^2(B+C)+(B+C)^3 =A^3+3A(B^2+2BC+C^2)+3A^2B+3A^2C+B^3+3B^2C+3BC^2+C^3 =A^3+B^3+C^3+3A^2B+3A^2C+3B^2A+3B^2C+3C^2A+3C^2B+6ABC
冉贞18441808980：
已知三个非负数a、b、c满足3a+2b+c=5和2a+b - 3c=1.若m=3a+b - 7c,则m的最小值为 - _ - ,m的最大值为 - _ - . -
39587通苛
：[答案] 联立 3a+2b+c=52a+b-3c=1 得 a=-3+7cb=7-11c 由题意知:a,b,c均是非负数 则 a=-3+7c≥0b=7-11c≥0 解得 3 7≤c≤ 7 11, m=3a+b-7c =3(-3+7c)+(7-11c)-7c =-2+3c 当c= 3 7时,m有最小值,即m=-2+3* 3 7=- 5 7; 当c= 7 11时,m有最大值,即m=-2+3* ...
冉贞18441808980：
2a+b+c=0 4a+2b+c=5 2a - b+c=4解方程组 -
39587通苛
：[答案] 2a+b+c=0 4a+2b+c=5 2a-b+c=4 1式-3式得b=-2 得a=3.5 b=-2 c=-5
冉贞18441808980：
已知a+b=b+c=c+a=5,则a+b+c= -
39587通苛
：[答案] a+b=b+c=c+a 所以a=b=c=5/2 a+b+c=15/2
