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【简答题】
Why does Stephanie think it is still important for businesspeople to travel regularly?
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举一反三
【简答题】电感元件的感抗XL=( )。电容元件的容抗XC=( )。
【简答题】正弦交流电路中,电阻元件上的阻抗 = ( ),与频率( );电感元件上的阻抗 = XL ,与频率成( );电容元件上的阻抗 = XC ,与频率成( )。
【单选题】The seminar is from 4.30 to 6.00, with time allowed for questions from the audience. Refreshments are served at 6.00.
A.
The speaker will respond to questions if time allows.
B.
There will be time to ask questions during the seminar.
C.
It will save time if questions are left until refreshments are served.
【简答题】Which of the following questions is best answered by information gained from Kohoutek?
【简答题】某电感元件的感抗为X L ，若在电感元件两端并联一电容而保持电流表的读数不变，如题如图所示，试问该电容的容抗为多大?
【简答题】用质量相等的0℃的水和0℃的冰来冷却食物，______的效果好一些，这是因为______．
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