问题:带有放大环节的稳压电源,其放大环节的放大倍数越大,输出电压越稳定。
Sunday, September 11, 2022
Thursday, November 10, 2022
问题:在选用电阻时,其额定功率要选用等于实际承受功率的()倍时才能保证电阻耐用可靠。
Wednesday, September 14, 2022
Wednesday, September 14, 2022
Thursday, November 10, 2022
Sunday, July 9, 2023
Friday, January 19, 2024
问题:判断磁场对通电导体作用力方向,用()A、左手定则B、右手定则C、安培定律D、楞次定律
Thursday, March 7, 2024
Wednesday, September 14, 2022
Monday, March 11, 2024
Saturday, April 29, 2023
问题:有人说,磁感应线起于N级,止于S级,这句话对吗?为什么?
Friday, October 20, 2023
Monday, March 11, 2024
Friday, October 20, 2023
Sunday, July 9, 2023
问题:在内电路中电流的方向与电动势方向相同,在外电路中电流的方向与电压的方向()
Thursday, December 15, 2022
问题:正弦交流电路中,负载的三种电路性质分别是阻性、()性和容性。
Wednesday, September 14, 2022
问题:在晶体管电路中,当Eb一定时通过调整基极偏流电阻,可以调整放大器的()
Sunday, September 10, 2023
问题:常用的低压熔断器可分为携入式、螺旋式、()和有填料封闭式四大类。
Friday, October 20, 2023
问题:磁场中与磁介质的性质无关的物理量是()A、磁场强度B、磁感应强度C、磁通D、磁感应
Monday, October 9, 2023