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Do you want a friend whom you ____ tell everything to A can B could 选哪个为什么? The room had a wall through which the scientists could observe what happened without being seenThe room had a wall 后面是否应该加逗号呢? The thief entered the room without ( )A.noticing B.being noticed C.having noticed D.having been noticed where he could see without being _____ being seen by others,he slipped out of the meeting roomA.To be avoidedB.AvoidingC.To avoidD.Avoided选哪个?为什么? 快速地过马路的英文是什么?不是quickly cross the road 吗(⊙_⊙)? 1123581321什么寓意 示波器实验触发等实验问题假如用函数信号发生器产生一个峰峰值200mv,中“带-250mv偏置”是什么意思 具体要调节什么使用CH2的下降边沿作为触发条件 怎么调节零电位在屏幕中央 我怎么知道 Do you want a friend whom you could tell everything to?这一句中的to提前会变成什么样的句子,为什么to提前了引导词就只能用whom.和原句区别在哪? The missing boy was last seen ___ near the river.A.playing  B.to be playing  C.play  D.to play为什么选A?see的被动语态不用还原to吗?为什么不用B, 示波器的实验步骤要最简洁的. Do you want a friend to whom you could tell everything这个语序怎么去理解~总感觉别扭, 示波器实验1)频率比为1:1里萨如图形何时为椭圆,何时为圆?2)如果Y轴信号的频率fy比X轴信号的频率fx大很多,示波器上看到什么情形?相反又会看到什么情形? The missing boys were last seen ____ near the river.(NMET94 25)A.playing B.to be playing C.play D.to play我觉得选b 因为感官动词see变为被动时要加to,然后又强调正在,所以选b 如果我的人格分裂了,我怎么办才能定位自己? 128 the missing boys were last seen___near the riverplaying to playwhy? 有一列数:第一个数为x1=1,第二个数为x2=4,第三个数开始依次记为x3,x4,…,xn;从第二个数开始,每个数是它相邻两数和的一半,则 x3=(),xn=( ) 观察一列数:-1/3,1/8,-1/15,1/24,-1/35...第7个数是?第10个数是?第n个数 我为能写出来的人表示感谢有一列数437986437986...第80位是几? 第二问是这一列数的和 第二问是求这一列数的和 示波器在本实验中起到什么作用 Do you want a friend to whom you could tell everything能不能把to去掉,求讲解.把to去掉,用法tell sb.sth.的用法,不用tell sth.to sb.One should have a friend whom you can tell everything 在教参上是错句,为什么. The sick boy ____ to hospital by the police yesterday.A . is taken B. was taken C. takes D.took请说一下理由,谢谢 The boy was seen ___on the playground.A.play B.to play C.played D.to playing. 英语翻译怨妇的行为就像吃了一只苍蝇一样恶心!中文原句是上面的这句话!1.That annoyed lady's act is disgusting as if a fly was eaten.2.A jealous woman 's action looks as sick as a fly were eaten.但我不知道这上面两 英语翻译全部翻译The automatic external output function is set up.When the notebook is connected to an external display,external output is activated automatically. 属于与真子集有什么区别?对于第3个回答,难道我们班的所有女生不能总和算一个整体吗?比如说人中有男人,女人。女人就是一个整体,算一个元素。 如何用示波器测量音频 示波器测量疑问我刚买示波器,初学,请问比如测量7805输出电压或者滤波电容电压,供电用的是变压器那么是将示波器三个插头拔掉一个?还用这样做吗?还用将三项插头的地拔掉吗? (示波器)如果被测信号幅度太大,则在屏幕上看见什么图形? 示波器实验中若被测信号幅度太大,则在屏上看到什么图形