请教一道物理题（灌水勿入,按下列要求设计一个变压器：在同一闭合铁芯上绕三个线圈,甲线圈接220V照明电源,乙线圈要求输出36V电压和100W额定功率,丙线圈要求输出6V电压和10W额定功率．乙

请教一道物理题（灌水勿入,按下列要求设计一个变压器：在同一闭合铁芯上绕三个线圈,甲线圈接220V照明电源,乙线圈要求输出36V电压和100W额定功率,丙线圈要求输出6V电压和10W额定功率．乙 请教一道减数分裂的题（灌水,抄袭勿入谢谢）第9题,请问怎么判断谢谢 请教一道生物题（灌水抄袭勿入谢谢）http://wenku.baidu.com/link?url=eSam3QYV5c_HVKWsm6MjEKCtre2bi-GXVVRryGILHknZsFJGpZf11B1zG8Hz2Jlf4FLG7V5EpqbiIwMrBrAgvVyrDFNY8utG0AS236Z2AQW第9题,请问怎么判断谢谢 请教一道物理题（抄袭灌水勿入谢谢）其中A选项,θ增大,那么是传送带的长度不变,即C的高度也增大,还是C的高度不变,传送带长度减小?物块可能一直匀加速,也可能先匀加速,后匀速. 请教一道物理题（抄袭,灌水勿入,在静电场中,将一正电荷从a点移到b点,电场力做了负功,则(　　)A．b点的电场强度一定比a点大B．电场线方向一定从b指向aC．b点的电势一定比a点高D．该电荷的 请教一道高一物理题! 请教一道英语选择题（灌水,抄袭勿入,The south was attacked by such a big sonw___few people had ever experienced before.A.as B.and C.that D.which 请教一道英语题（灌水抄袭勿入,What we have said ________ her so happy.A.makes B.to makeC.made D.has made请问其它选项为什么不对, 请教一道电学方面的物理题 请教一道英语选择题（灌水勿入）-Shall we go out for a meal tonight?-__________.We haven’t been out for ages.A.No bother B.That’s all right C.Not really D.I’d love to请问BD改选哪个？为什么？ 请教一道英语选择题（灌水,抄袭勿入,—I think 20 dollars for it is OK.—No,I’d gladly pay _____ for it.A.twice as much B.three times of what C.the price twice D.as much three times 请教英语问题（灌水,抄袭勿入,谢谢）Today I habe to go to work by bus because my car___ at the garage.为什么选is being repaired而不选has been repaired? 速求一道物理题,要求全部的过程 一道物理题, 一道物理题, 一道物理题, 一道物理题, 一道物理题,