题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075116-20249.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075117-90557.gif)
①若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075117-83171.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075117-37862.gif)
②若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075117-40313.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075117-81116.gif)
③若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075118-99296.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075118-40534.gif)
④若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075118-80063.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075118-56069.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075119-71789.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075117-81116.gif)
其中正确的命题序号是 ▲ .
答案
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075106-57323.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075107-60110.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075106-57323.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075107-82029.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075107-63950.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075108-60143.gif)
求证:(Ⅰ)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075108-83983.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075108-67071.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075108-32502.gif)
(Ⅱ)平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075109-12846.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075109-32201.gif)
如图,直二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075053-66148.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075053-51837.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075053-82834.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075053-24971.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075053-16194.gif)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075053-24149.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075054-91969.gif)
(2)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075054-84611.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075054-22102.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075047-94734.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075048-27832.png)
A.
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075048-26150.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075048-60583.png)
C.
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075048-49968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075049-62436.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075036-78191.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075037-57750.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075037-26703.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075037-17640.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075038-24063.png)
(1)请画出该安全标识墩的侧(左)视图;
(2)求该安全标识墩的体积
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075032-75078.jpg)
最新试题
- 1读四省区轮廓图,完成下列要求:(1)4个省中, ①________是省, ②省的简称是______,③省的行政中心是__
- 2---I’d thought you couldn’t deal with the situation.---On th
- 3一学生用弹簧秤竖直悬挂质量为m的砝码,由静止乘电梯从地面到达某楼层,同时不断地观察弹簧秤示数的变化,记下相应的数据和时间
- 4默写。(每空1分,共9分)小题1:采菊东篱下, 。(陶渊明《饮酒》)小题2:
- 5常温下,用0.1000 mol/L NaOH溶液滴定20. 00 mL 0.1000 mol/L HCl溶液,滴定曲线,
- 6在不用指示剂的前提下,欲将含有盐酸的氯化钙溶液中的盐酸除去,最好选用下列物质中的A.碳酸钙B.石灰水C.氢氧化钠D.熟石
- 7血压是流动的血液对血管壁产生的侧压力。通常所说的血压是指_______ ,可以在_______处测得。
- 8北京及其周围地区的地势特点是[ ]A.南高北低B.西北高东南低C.东高西低D.东北高西南低
- 9若集合A、B、C,满足A∩B=A,B∪C=C,则A与C之间的关系为[ ]A、ACB、CAC、AC D、CA
- 10如图所示,2008年2月3日上午,安徽省枞阳县出现了南方地区罕见的自然美景--雾淞。它属于 现象;
热门考点
- 1下列说法中,正确的是 A.1mol O的质量是32 g/molB.OH-的摩尔质量是17 gC.1mol H2O的质量是
- 2下列关于二战后美国经济状况的叙述,正确的是 ( )A.20世纪50年代中期
- 3图例所代表的地理事物是[ ]A.运河 B.河流 C.铁路 D.长城
- 4用诗中的原句填空。(1)《山居秋暝》中表现诗人决心远离官场,洁身自好,归隐山林的诗句是“ _____________,
- 5在A、B、C、D、四种物质中,它们之间的转化关系可用下列反应表示:①A+HCl→B+H2O ②A+H2△C+H2O ③B
- 6人的胃、肝脏、肾在结构层次上属于什么水平( )A.细胞B.组织C.器官D.系统
- 7昆虫翅和鸟翼在结构上是不同的,二者适应飞行的相同点不包括哪一项( )A.二者都是由骨骼和肌肉组成的B.上下扇动都可以产
- 82010年10月,多家媒体几乎同时刊出了我国某著名乳业公司项目经理因诋毁其他竞争对手的产品而被刑事拘留的消息。消息发布当
- 9小明从最近的《半月谈》上获悉,江西省赣州市已成为我国生态农业示范市,其模式为“猪一沼一果”、“猪一沼一稻”、“猪一沼一菜
- 10阅读短文,根据短文内容判断正误,正确的写“T”,错误的写”F”。Shane Battier (肖恩巴蒂尔) is a f