题目内容
若换路发生在零时刻，则t=0+为换路后的第一瞬间，t=0-为换路前的最末一瞬间。
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Staff: Good morning. Tulip restaurant.____________________Guest: Good morning. I,'d like to reserve a table for dinner tonight, pleaseStaff: Certainly, sir. _________, please?Guest: A party of fourStaff: For What time, pleaseGuest:Oh, we will come around here at 6: 30 p.mStaff: I see. ___________________Guest: In the dinning hall will be fine. By the way, could you give us a table close tothe window?Staff: Certainly, sir._______________________ pleaseGuest: Yes. It's Mike Williams and my number is 55564439Staff: All right. Your reservation is _______ for tonight. We look forward to seeingyou. Thank you for calling.A. Would you like a table in the dinning hall or in a private room?B. How may I help you?; May I help you?; What can I do for you?C. May I have your name and your telephone numberD.confirmedE. For how many people
正是因为能量不能突变，才有电容元件的（电压/电流）不能突变，电感元件的（电压/电流）不能突变。这就是换路定律。
动态电路就是含有动态元件的电路。
若描述电路的方程是一阶微分方程，这样的电路称为一阶电路。
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