共射放大电路接收信号的能力很强，带负载能力也很强。
查看答案
对放大电路进行动态分析，除了微变等效电路法，还有图解法。
A. 对
B. 错
It's about ten or fifteen minutes ______ foot.
A. at
B. on
Their map archives are more ______ than our collection.
A. extensive
B. bigger
The bus route is more interesting because you can see ______.
A. more
B. many
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