基坑支护作业指引

命题A,若x大于0,则a的x次方小于1 命题B,函数y=x平方-4ax在(-无穷大,1] 为减函数,若A与B中至少有一个是真命题,则实数a的取值范围是 各位帮我算一道二元一次方程组的题谢谢帮下我｛4（X-Y-1)=3(1-Y)-2X/2+Y/3=2 函数y=x的负2次方在（0,＋无穷大）上是增函数吗?在（0,－无穷大）上呢? 如图,在线段AE的同侧作正方形ABCD和正方形BEFG(BE Announced that happiness will not come 诉求翻译 Polly is the most diret young woman that I have ever come across.为什么要加ever?不加可以吗?ever在句子中什么结构?什么词性? I always believe I can have the happiness that belongs to me for ever,but I don't feel happy now. I believe there will be one day that happiness will come to me.翻译成汉语 翻译中文 What is the name of the king of engiant in 1908? 如图,将正方形纸片ABCD折叠两次,第一次折痕为AC,第二次折痕为AE,且点D落在点F处.若正方形边长是1,求DE的长.请详细写出解题过程和思路,要用勾股定理 George saw his father off at the airport yesterday afternoon.怎么翻译 一、用关联恰当的词,把下面各题中的两句话并成一句话.1、大象死后就在原地没有被移动过.大象的骨架能够这样完整的保存下来.2、周总理逝世了.周总理永远活在人们的心中.3、他爱读书.他 She has promised return the dictionary in the evening.为什么promise后用原型? 这个题目怎么算?（用二元一次方程组解）某队人员要从A地到相距18km的B地去,只有一辆汽车,将全体人员分成甲、乙两组,先让甲组乘车,乙组步行,同时出发；甲组到达途中的C地后下车步行继续 S. steel It probably has somehting to do with the fact that nicotine is appetite suppressant and appears to up your metabolic rate.请问这里的词可以理解为:appear to:似乎?up 增长?是分开的吗? The main difference has to do with the fact that...中文 something that has to do with making junk.详解这句话的语法详解这句话使用的语法 英语翻译尤其是句中的develop应怎样翻译,先谢过 a problem that somebody has with something是什么从句撒 圆方钢 金结10~18# 装修的金9银10由来是什么,是不是螃蟹的9雌10雄?金是蟹黄,银是蟹膏. And cars helped make the USA _it is now .A what B how , in spite of the fact 同题! in spite of the fact that...because的意思和用法 for all that...in spite of the fact that...yisi In spite of the fact 用法? 有说明最好一个水池内有两个进水管,一个出水管,单独开进水管,一个进水管用3h可以把水池注满,另一个进水管用3.5h可以把水池注满,单独开出水管,用了7h可以把满池水排空.若三个管同时开过 在线做数学题 急,要百分百正确的,初二水平就好一个小球从长2m的斜面上滚下,在水平面上又滚动了6.4m后停止,测得小球在斜面上和在水平面上运动的时间分别是6s和16s,求：1 小球在斜面上的平均速度2.小球 1×2分之一加2×3分之1加3×4分之1加.98×99分之1加99×100分之1这题怎么做要过程的,谢谢了,很急的,过程写一下,谢谢了,顺便算下这题：十分之九加一百分之九十九加一千分之九百九十九加一万分