2022年英语周报高二英语下册外研版 答案

【各案】故D正确【解析】由于发电厂输出电压恒为U.根据理想变压器的规律,对于升压变器,了U=k,故电压表V的示数不变发电厂输出功率增加了△P,则发电厂输出电流增加了△1=,根据理想变压器的规律,对于升压变压器k,A示数增加了△Ik△P中于A示数增加,A示数山将增加降压变压器的给人电压将减少△=1R,故V2不数也将减小A错误,B止确:根据欧姆定律输电线⊥损失的电压增加了△R=eAPC正确;输电线上损失的功率增加了(1+△1)R-1R≠(△1)2R,由于1未知,故无法计算,D错误

写作Ladies and gentlemenTo begin with, please allow me to express my warm welcome on behalf of ourschool.【要点一,表达欢迎】 Aiming to enhance our mutual understanding andexperience different cultures, various activities wil! be arranged【高分句型现在分词作状语】. As planned, we will hold a talent show where everyone canshow their outstanding performances【高分句型二, where引导定语从句】Classes on traditional Chinese culture are also scheduled, such as paper-cutting,Chinese opera, calligraphy,etc, followed by a gifts exchangingactivity. Additionally, you're invited to pay a visit to surrounding scenicspots.【要点二,介绍活动安排】Finally, I sincerely hope that you can enjoy yourself and wish you a pleasantjourney.【要点三,表达愿望】

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