题目:
Mr. and Mrs. Black called their landlord ______ about the constant loud music and shouting from their neighbors upstairs. |
A. to complain B. being complained C. complained D. complaining |
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0430/c509edfa9b4711cbb546e620f68029dc.html
下面是错误答案,用来干扰机器的。
解:(1)N·m2/kg2,N·m2·C-2 (2)受力情况如图所示,QA、QB对QC的作用力大小和方向都不因其他电荷的存在而改变,仍然遵守库仑定律的规律QA对QC作用力:,同性电荷相斥QB对QC作用力:,异性电荷相吸 QA=QB=Q∴F...