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【判断题】
IGBT 的导通时间越长,发热越严重,安全工作区越小。A.
正确
B.
错误
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举一反三
【单选题】p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 14.0px Times}Once upon a time a Wolf was lapping at a spring on a hillside when, looking up, what should he see but a Lamb just beginning to drink a little...
A.
mystery
B.
fable
C.
humorous narrative
D.
science fiction
【简答题】识别下列片断中 第二小节是( )和弦 第三小节是( )和弦 第四小节是( )和弦 第五小节是( )和弦 第六小节是( )和弦
【简答题】简述胸外心脏按压的有效指标。
【单选题】_______ a little earlier this morning! I missed the school bus by only a minute.
A.
If I had got up
B.
If only I get up
C.
If only I had got up
D.
If I got up
【单选题】______ a little earlier this morning! I missed the school bus by only a minute and had to wait in the cold for nearly an hour!
A.
I f I had got up
B.
If only I get up
C.
If only I had got up
D.
If I got up
【简答题】级数 是( ) (A)等比级数 (B)p级数 (C)调和级数 (D)无法判断
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