数学分析中的积分中值定理能推移到复变函数积分上来。()
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The length of a letter does not depend on the subject of the letter.()
在复变函数中，负数也有对数。这一点和实变函数中不同，而且正实数的对数在复变函数中也是无穷多值的。()
The use of the passive voice cannot soften a request.()
The courtesy title Miss is used for a married woman.()
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