问答题

4. Zhao says the peaceful nature of Zheng He's voyages show that, in contrast to the West's rise, China is not an expansionist culture.

答案： \n \n \n \n (1)\n ...

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Newton method is introduced in obtaining the zeros of a single-variable function and can also extend our study to the solution of a set of multivariable equations.

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在配位滴定中，金属离子与EDTA形成配合物越稳定，在滴定时允许的pH值（）。 A. 越高 B. 越低 C. 中性 D. 碱性