气体导电和电离

来源:学生作业帮助网 编辑:作业帮 时间:2024/02/22 02:30:48
关于三相电路中的一道题请问 在 电 源 对 称 的 三 相 四 线 制 电 路 中,不 对 称 的 三 相 负 载 作 星 形 连 接,负 载 各 相 相 电 流 是否对称? 关于三相电路题目的一些计算问题请问2个角相除怎么除吖?角那个符号不会打就用“V”代替啦~例如(220V-120度)/(10V90度)=22V150度(220V120度)/(10V-90度)=22V-150度还有:请问极标式怎么化成代数式 三相电路的一个题目,在三角形连接的三相负载中,每相负载阻抗Z=100 电路习题7-18为什么u(0-)=0,是Uc(0-)=0 回答下面英语选择题需要解析 28 Would you mind my smoking here?___it's not allowed hereA of course not B Better not C Yes,please D OK29 How do you like __Tv play Ren Changxia?oh it's__wonderful play,it's one of __best Tvplays A a;a;the B the;the;the C the;a;/ D the;a;the43 Miss 一个自然数是(abc)9,又是(cba)7.求它在十进制中是多少 求英语高手帮我检查一下选择题 求画出这题的电路图. 怎么画这个电路图?第二题 abc*d=1673,在这个乘法算式中,ABCD代表不同的数,ABC是一个三位数,ABC代表什么数 这题电路怎么画? 求2题的电路图怎么画吗? 请英语好的朋友,帮我做下选择题,我对下答案...单选题 (共 30题)必须做在答题纸上1、Can you ______ me the book?A.lend B.borrow C.lent D.borrowing 2、 _______ there many books in the reading room?A.Is B.Are C.Am 找朋友 ( )1.what did he do yesterday?( )2.who's going to go to the airport?( )3.why don't you give him a kite?( )4.does lingling like english food?( )5.what did she have for breakfast?A.that's a good idea!B.yes,she does.C.she had eggs and sausages 1.“Who would like to go fishing with me?”“I ______.”A.shall B.would C.may D.will 2.Mr.Smith will buy some interesting books for______.A.you,him and me B.you,I and heC.you,me and him D.him,you and I 3._________smoke here,please 几道英语选择题.望朋友能给予详解.1.At the age of eleven .My grandfather ____________to work in a factory.A.began B.had began C.will begin D.begins2.-----May I see Mr.Sawyer?-----Can you wait __________3 p.m.A.to B.for C.till D.until3.We 关于一道英语选择题,英语比较好的朋友请过来看看By signing this application,I asked that an account(____) for me and a credit card issued as I request.A.be opened B.being openedC.is opened D.will be opened应该选哪个,我对语 abc乘d等于1365,写出同样的算式 abc×d=1143.a,b,c,d分别代表不同的数字,d等于多少? 最后一题要画出电路图 The teacher told us to gather _____about the ancient calendar.A.as much information as possible B.information as much as possible C.as more information as possible D.information as more as possible为什么选A不选B? Can you lend me your bike _________.I am going to use it soon.A.I don't hope so B.I'm not afraid.C.I'm afraid D.I'm afraid not 2.May I go now No,you _____ A.may not B.mustn't C.needn't D.can't 3.Help ________ to some f 1.Sandy could do nothing but__to his teacher that he was wrong.A.admit B.admitted C.admitting D.to admit2.The person__of the factory has__ill since last week.A.in charge,been B.in the charge,fallenC.taking charge,fallen D.in charge,fell3.Readers can_ They saw a car at the stree corner__Irish licence plates.备选答案1.bearing;2.yielding 3.proving 这是一个关于概率的选择题现有五个球分别记为A,C,J,K,S,随机放入三个盒子,每个盒子只能放一个球,则K或S在盒中的概率是( )A.1/10 B.3/5 C.3/10 D.9/10 平面上的四边形ABCD是一只风筝的骨架,其中AB=AD,CB=CD证明AC垂直BD,且BE=ED 如图,平面上的四边形 ABCD 是一只"风筝"的骨架,其中 AB=AD,CB=CD.(1)九年级王云同学观察了这个 风筝"的骨如图,平面上的四边形 ABCD 是一只"风筝"的骨架,其中 AB=AD,CB=CD. (1)九年级王云同学 如图,平面上的四边形ABCD是一只“风筝”的骨架,其中AB=AD,BC=CD. 考试时有四道选择题,每道题有四个答案,其中只有一个是正确的,某考生随机选择答案,求至少对三道题的概率 在梯形ABCD中,AD‖BC,AB⊥AC,∠B为45度,AD=√2,BC=4√2,求DC的长 如图,在梯形ABCD中,已知CD平行AB,∠A=40°,∠B=70° 求证:AD=AB-DC