Tom made a beautiful rabbit lantern with the help of his parents.(变被动语态) A beautiful rabbit lantern________ ________by Tom with the help of his parents.
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举一反三
【单选题】在图中所示放大电路,已知U cc =6V、R c =2KΩ、R B =200Kω、 =50。放大电路的静态工作点为( )。