书面表达One possible versionDear PeterI'm writing to invite you to see the Chinese Painting Exhibition to be held in our city.The exhibition will start at 8: 30 am on Saturday and last till 5: 00 pm on Sunday in the city museum It'ssaid that a large number of Chinese paintings, some of which are original works by famous painters like ZhangDaqian and Qi Baishi, will be on display. Besides, there will be various souvenirs to be sold. I know you re veryinterested in traditional Chinese culture, so I can t wait to tell you the news and hope we can go together.Looking forward to your reply.You

5C【解析】设原线圈电流为Ⅰ1副线圈电流为l2三个电阻消耗的功率均为P,则有R×64R,解得12=1,所以原、副线圈匝数比n=了=有根据PR可得电阻R两端的电压为U=√PR,根据变压器输人功率等于输出功率可知,变压器原线圈的功率为2P,则加在变压器原线圈两端的电压为2U=2√PR所以U=3√PR,C正确。故选C。

以上就是七年级下册2019到2022英语周报第28期答案，更多英语周报答案请关注本网站。

本文地址： http://www.ncneedu.cn/post/17565.html

文章来源：admin

版权声明：除非特别标注，否则均为本站原创文章，转载时请以链接形式注明文章出处。