【判断题】变压器折算的条件是保持一次侧磁动势不变。
【单选题】Oh, come on, Tom! It’s time __________.
【单选题】----- Tom has won the first prize in the singing contest of our school. ------- __________ .You see he always works hardest.
C.
All roads lead to Rome
D.
It is no use reasoning with a fool.
【简答题】硅二极管的开启电压约为 _________V,锗二极管的开启电压约为 _________。
【简答题】一般硅二极管的开启电压约为 V ,锗二极管的开启电压约为 V。
【单选题】–I really thought I’d win first prize. --Oh,…well, , Tom.
【简答题】硅二极管的开启电压约为()V,锗二极管的开启电压约为()V。
【简答题】It was Tom’s first visit to England, and he was looking forward to his first journey, on London’s Underground Railway. And against his friends’ 1_____, he was determined to travel 2 _____. He entered ...