问题:在无分支电路中,当有几处导线的截面积不同时,通过导线的电流()A、仍然相等B、不相等C、为零D、无穷大
Friday, January 19, 2024
Monday, October 9, 2023
问题:通常()电阻的阻值和误差用色环表示。A、1瓦以上的线绕B、1/2瓦金属膜C、1/4瓦碳膜D、1/8瓦碳膜
Tuesday, May 9, 2023
Wednesday, December 13, 2023
Thursday, June 15, 2023
Wednesday, September 14, 2022
Monday, April 8, 2024
问题:有线电视系统是通过选择合适位置安装天线的方法,来解决阴影区用户电视接收问提的。
Saturday, April 22, 2023
Wednesday, September 14, 2022
Monday, March 11, 2024
Sunday, September 11, 2022
Thursday, March 7, 2024
问题:电焊变压器的最大特点,就是具有陡降的外特性,以满足电弧焊接的要求。
Friday, January 19, 2024
Monday, April 24, 2023
问题:表示交流电变化快慢的三个物理量分别是频率、()和角频率。
Wednesday, December 13, 2023
Saturday, January 6, 2024
Thursday, March 7, 2024
问题:三相交流电对称的条件是大小相等、频率相等、相位互差()
Friday, October 20, 2023
Wednesday, September 14, 2022
Wednesday, December 13, 2023