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【单选题】
测得晶体管三个电极的静态电流分别为 0.03mA, 3mA 和 3.03mA 。则该管的β约为A.
100.0
B.
60.0
C.
50.0
D.
40.0
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反馈参考答案：
举一反三
【简答题】建筑模数包括基本模数、____和____。
【单选题】My mom wouldn’t admit it, but she_____tears in her eyes when she waved me goodbye.
A.
does have
B.
do have
C.
did had
D.
did have
【单选题】What a kind teacher. But for his help, I __________ my study.
A.
wouldn’t finish
B.
wouldn’t have finished
C.
shouldn’t have finished
D.
mustn’t have finished
【单选题】–Tom, you didn’t come to my party last night? – I ________, but my mom hurt her back and I had to look after her.
A.
had to
B.
didn’t
C.
wouldn’t
D.
was going to
【简答题】建筑模数包括()、()、()。
【简答题】建筑模数包括 、 和 。
【简答题】My mom wouldn't admit it, but she ___________________________________.
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