导线上出现冲击电晕后,导线的波阻抗将增大,波速将减小。
查看答案
电缆线路的电容比架空线路的电容大得多。
A. 对
B. 错
分布参数电路最根本的特点在于电压和电流不但是时间的函数,而且是位置的函数。
A. 对
B. 错
Dr. Merrywhether thinks Antarctica was part of another continent because[音频][音频]
A. he has done his own research in the area.
B. there is geological evidence of this.
C. it is very close to South America.
Luke read that one reason why we often forget dreams is that[音频][音频]
A. Our memories cannot cope with too much information.
B. We might be otherwise be confused about what is real.
C. We do not think they are important.
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