扼流圈的作用

1、在四边形ABCD中,AC平分∠BAD,CM⊥AB,且AB+AD=2AM.求证：∠B+∠D=180°2、AD‖BC,BC=DC,CF平分∠BCE,DF‖AB,BF的延长线交DC于点E.求证：AD=DE3、AB=CD,AD=BC.（1）如图,如果DE=BF,求证：∠E=∠F.（2）如图,O为AC中 单选 读书心得300字我需要5篇读书心得,拜托 快点帮帮我 读书笔记300字左右,网络上的都看过了,多来几篇 求4篇300字左右的读书笔记 5 . 3x-7/8+5x+3/4=21123分数计算。急需！ 六年级下册语文课堂作业本12课第五六题答案 1/a+1/b=1/(a+b) 求b/a+a/b的值化简求值 (2a)/(a²－4) ＋1/( 2－a) a＝1/2(x＋2y)/(x+y）＋(2y²)/(x²－y²) x＝-2 y＝1/3 文言文两则） 几道高一英语单选1 I wish to go swimming with you this afternoon,__________?A do I B may I C won't you D don't I 2 He opened his mouth as though _________something.A to say B saying C said D had said 3 He claimed_________ in the supermarket wh 人教版六年级下册语文课堂作业本答案第一课小练笔,至少七行, 高一英语单选几道1 He speaks English well indeed,but not ______ native speaker.A as fluent as B so fluently as 为何不能选A?2 80 percent of the population of china ___farmers.A are B is 为何is不行?3 Soon ,as another car _____quickly,wi 六年级下册语文课堂作业本第一课的小练笔?校对一下!各位 帮啊吧 1.I still remember the house _______ my mother and i used to stay in that evening.A.where B.which C.in that D.the one2.I came to tell you that Mr.Wang ______ for London tomorrow afternoon.His plane ___ at 4 am.A.leves;leves B.is leving;leves C.is lev 六年级下册语文课堂作业本第一课的小练笔怎么写 Much to my surprise,he ______ have entered the building without being noticed by the security guards.A.could\x05\x05\x05\x05B.might\x05\x05\x05\x05C.must\x05\x05\x05\x05D.should老师报答案是C 但是这个句子的意思不应该是令我吃惊 5x+3y=77,3x+5y=75 老人与海 读书心得,300字左右要语句通顺,字数300左右 如何提高初二数学成绩? 钢铁是怎样炼成的读书笔记300字 《钢铁是怎样炼成的》读书笔记.每章一篇,300字以内必须以 摘抄式 评注式 心得式 记载式 钢铁是怎样炼成的读书笔记200到300字 求助《钢铁是怎样炼成的》的读书笔记300字15篇急求各位,谁能提供一下15篇,每篇300字的读书笔记.在这儿先谢谢各位了! 钢铁是怎样炼成的 读书笔记300字 5篇 最好刚刚300字、再次提醒要5篇 初二数学不难吧?还有物理? 1.严冬的早晨在窗户玻璃上能观察到冰花,为什么冰花只在室内一面,而室外一面却没有冰花?2.一杯很烫的水,要是这杯水冷却的快些,你准备采取哪些做法?请至少写出两种做法,并指出每种做法 六年级上册语文课堂作业本第13课答案 假命题可以用如果 那么这种形式写吗 老人与海的读书笔记 500字 几个高一英语单选 希望详解 I'll show you an old photo to see if you could ___ my brother among the group.A pick out B pick up C pick off D pick overdon't search my desk for your MP3!just look where it ___ be ---in your schoolbag ,in your d 老人与海读书笔记10篇（500字） 高一英语单选（求讲解）55.A man may usually be known by the books he reads ___by the friends he keeps.A.Always pretended B.Always pretending C.Had Always pretended D.Always being pretended61.we __every day these daysto prepare for the speec