根号3是有理数吗

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带监控的红外线摄像头红外线灯不亮能用吗? 手锯锯条应选用何种碳钢制造 手锯的钢锯条磨成的小刀快还是文具店的壁纸刀快?就这种锯条还有这种锯条是什么材料的,硬度如何 求有悲伤意境的四个字的词语 纳兰容若的最好带有“梦”字的 有关悲伤的词语(四个字的) dnf 制做干扰发射器[6/7]小型干扰芯片[0/1] 的任务怎样完成? make a difference 在句中的意思请问 This traffical accident will certainly make a difference to the way he drives . cheer sb on. i在 sb怎么用? 怎样自制一个电磁波发射器要用FM接收,想接在电脑上,在家就可以听音乐了,需要什么配件,电路图,还有就是如果买一个64MHZ的晶体振荡器,收音机要调哪个频段才可以收听 怎么自制一个电磁波发射器 一般将来时的基本结构是:am/is/are/going to+do.那am/is/are/going to在这充当什么角色?do呢? 赞美闪电的诗 描写闪电和雷声的句子. 形容心如闪电的词语或句子 what are you going to do?和 where are you going?是不是都可以用“I am going to the cinema.” offer as a tribute是动词词组还是名词短语? as.as这短语怎么用? As···as···的短语怎么用那个As···as···的短语是怎么理解额比如As soon as possible或as long as you like意思我是明白,但这个短语怎么用我不会还有就是,哪位仁兄英语好的能M我给个Q我.我有什么 turn 的 各种用法//如题 力是产生()的原因,且加速度的方向永远与()的方向一致. 全球的恐怖分子,有哪些组织.名称分别是什么 世界慈善组织名称大家帮帮小丫头我的忙啊~~~~~~不甚感激~~~~~~~~不是光这个!还有就是……比如红十字会什么的~~~只要是慈善组织什么基金会都要~谢谢 请以what do you think of watching TV为话题 不用太多,简单一点就行了 we made the playground in front of the school In the front of the school s____ a high classroom building.首字母填空 The was an old building in front of our school(保持句意不变There ___ ___be an old building in front of our school in the front of the school与at the frount of the school有什么区别? It makes no difference to me.这个句子为什么difference不加s.1.差别,差异[C][(+between)] Whether it rains or not makes no difference to me.下不下雨对我来说都一样.Can you tell the difference between an ape and a monkey?你能区 PHNIX 空气然热泵热水器最高出水温度? the difference in the___toward money makes one different from anotherA.attitudeB.concernC.opinionD.quality Why do you look so angry?— He insists on my presence here,but I can see it makes no difference ______.A.I am here B.I was here C.me to be here D.my being here选D 为什么 而且为什么是my 怎么区别good for sb's health和good for sb's healthy今天看到两个例句,彻底把我看懵了:1.Greens are good for our health2.Vegetables are good for our healthy我想知道这两个例句为什么一个用good for our health而另一个