题目内容

变压器反馈式振荡器,只要是正反馈,就满足了相位平衡条件。

A. 对
B. 错

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振荡器的振荡频率和选频网络的谐振频率是一样的,不用区分。

A. 对
B. 错

As the most popular Q & A social media, Zhihu is a good platform to share information and ______ ideas.

A. change
B. exchange
C. transform
D. alternate

Even though heavy downpours and devastating floods have swept across southern China, we still believe Three Gorges Dam has great _________ to control floods.

A. right
B. potential
C. mighty
D. possibility

Lenovo was much-criticized recently, but it seemed to be slow to ______ to the crisis.

A. respond
B. cater
C. desire
D. attribute

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