运放工作在非线性区时,输出电压不是高电平就是低电平。
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即使在很浓的强酸水溶液中,仍然有OH‒离子存在。
A. 对
B. 错
The British government began to increase the economic exploitation of the colonies to ______________.
A. Gain greater control of the colonies
B. Pay off its debt due to the war
C. Develop more colonies
D. Show its supremacy over the colonies
During the War, the fundamental documents of the US,____________________, was drafted and issued in 1776.
The event that triggered the War of Independence is ______.