问答题

晶闸管是硅晶体闸流管,常用的外形有与

答案： ["螺栓型","平板型"]

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This is perhps one of _ importnt resons why so mny people write poetry. ; theB．th

e ;This is perhps one of _____ importnt resons why so mny people write ____ poetry. ; the B．the ; the C．the; 不填 D．; 不填A．a ; theB．the ; theC．the; 不填D．a; 不填

Topic: coming to college Controlling idea: several reasons Topic Sentence: ____________________

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