题目内容
调频和调相统称为角度调制,调频可以通过微分加相位调制器来实现。
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The teacher should not demonstrate to let the students understand the purpose and intention in the meaningful practice.
Teachers should gradually reduce the control of students because their role is mainly to guide, supervise, monitor and evaluate in the meaningful practice.
The teacher should create a relaxed and lively atmosphere conducive to the development of students' creative thinking in the meaningful practice.
The teacher should pay more attention to coherence and expressiveness of language rather than authentic in the meaningful practice.
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