题目内容

电压比较器中集成运放工作在非线性区，输出电压U。只有（）或( )两种状态。

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运放工作在非线性区时,输出电压不是高电平就是低电平。

A. 对
B. 错

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.