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振荡电路必须工作于负反馈状态。
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振荡电路必须工作于正反馈状态。
简述新中国成立初期，中国共产党全面实施新民主主义的建国纲领所采取的措施。
新民主主义社会理论的内容有哪些？
Examples:1) Selected by professor to assist with major research grant to explore the most effective English education strategies.2) Worked in a team with other students to produce a report on the effectiveness of water treatment methods.
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