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概括城市社会学的学科特点。

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热熟化和冷热化模塑泡沫体的主要区别是（）

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对辊破碎机运转过程有异常噪音的处理方法是（）。

A. 清除杂物
B. 检查、紧固松动零件
C. 检查轧辊间隙
D. 适当调整链条张紧度

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Companycom is considering a partitioned solution which will require cumulative rPerf total of 150. The original sizing came back recommending a 32-way p5 590. However, they have a requirement for future scalability and availability is important. Which of the following would be the best reason to recommend a p5 595?（）

A. The p5 595 would allow for COD
B. The p5 595 includes the Advanced Power Virtualization hardware and software
C. The p5 595 is priced the same as the p5 590 given the same number/type of CPUs
D. The p5 595 performance would be equivalent to the p5 590 given the same number/type of CPU

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在数控机床开始加工工件之前，若某轴在回零点位置前已处在零点位置，必须先将该轴移动到距离原点50mm以外的位置，再进行手动回零点。

A. 正确
B. 错误

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