支柱作业人员的工作任务

一队学生去校外进行军事训练的过程中,队长有事要从队头通知到队尾,于是,通讯员以18m/min的速度从队头至队尾又返回.已知队伍的行进速度为14m/min.问：（1）若队伍长度为320m,则通讯员几分钟 数学题：1号探测气球从海拔10m处出发,以2m/min的速度上升与此同时1号探测气球从海拔10m处出发,以2m/min的速度上升与此同时,2 号探测气球从海拔20m 处出发,以1 m/min 的速度上升.两个气球都上升 阅读大赛初中判断题第一应该是对的吧汤姆索亚是得到圣经的呀 （ ）牛入海 一只牛在水边喝水,猜成语 ?入海 首字母填空(请看问题补充)I know it would be quite difficult,but I still would like to try because it's a c____ and rewarding job.We have c_____in their better future.Miss Liu c___ the class very well,although she is a new teacher.Look at th 冬天有可能不落叶吗? 读一读怎么写 问一道英语首字母填空题目一.根据首字母填空It's sunday (m ) .It's a little cold.sandy gets up very early.She puts on her white (b ) and dark blue (p ) .she likes these two (c ) .she wants to go(s ) with her mother because she( n ) t 对每个实数x,设f(x)取4x+1,x+2,-2x+4三个中的最小值,那么f(x)的最大值是多少? f（x）=ax^3-6x^2+b问是否存在实数ab使f（x）在[-1,2]上取最大值3最小值-29求ab的值 已知a为实数,f(x)=(x^2-4)(x-a),若f'(-1)=0,求f(x)在[-4,4]上的最大值和最小值 I don't what to love because we said 求一篇首字母填空答案文章：When Florence Nightingale was a very little girl,she used to go with her mother to visit the sick people in the little town near where they lived.She helped to carry food and medicines.Like other little girls of 求一篇英语首字母填空答案.Passage 2 Have you ever tried shopping online?What about talking with strangers through the Internet?Of course,yes.With the d__1__of society,the Internet is playing a more and more important p__2__in our daily lif 分解因式9(a-b)²+12(a²-b²)+4(a+b)² y=cos^2x-sin^2x+2sinxcosx(x属于R)的值域为什么 分解因式（1）.9（a－b）²＋12（a－b）＋4 （2）（a－b）³－4ab（b－a） 饱子 太空阶段怎么带同盟飞船太空阶段怎么带同盟飞船 有没有适合小学六年级做的首字母填空题 ,快来猜一猜,世界上什么最大!第一个是蓝鲸或章鱼,因为有科学记录显示海底最的大章鱼(乌贼)比蓝鲸还大,但还没见过活体 第二个是大象,估计没有比它大的了.第三个最大的飞鸟 生活在非洲 数学填空题 好的追加20我们常用“水滴石穿”来说明一个人只要持之以恒地做某事,就一定会成功,经测算,当水滴不断地滴在一块石头上,经过10年,石头上可形成一个深为1厘米的小洞,那么平均 猜一猜下面句子说的是什么东西!1What's black when it's clean and white when it's dirty?2What has a lot of teeth but no mouth?3Which is the smallest room in the word?4What goes up but never comesdown?5What can peple make but not see?6What 几道首字母填空题1.we don't need to give up cars but we need to i-----better,cleaner engines.2.i visited some relatives r----- in a small village.3.that would reduce r---- and air pollution.4.now the banks are o---- of money and governments ar Couid you tell me you love me 两河流域对古巴比伦文明有什么影响 一切都在图中, 苏美尔文化对整个两河流域的影响紧急 6＋|x-5|的最小值是多少? /x-1/+/x-2/+/x-3/x-4/+/x-5/ +/x-6/求最小值 用6个完全相同的长方形拼成一个正方形,每个小长方形的面积是多少?长和宽分别是多少分米 敬畏生命 （急~9.在整个观察过程中,作者的心理是怎样变化的?请摘录文中的词语回答.10.请简要概括作者描写的生命现象,并说说作者对此产生敬畏之情的原因.11.请简要描写一种引起你思索的