How does the writer define individual happiness in text B?
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He went home after being(release) from the prison.
His failure on the math exam(motivator) him to study harder.
His mother is (pride) of his success.
为了提高效率，功率放大电路不适合采用下面哪种电路？
A. 甲类放大
B. 乙类放大
C. 甲乙类放大
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