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请说出道岔2DQJ接点烧坏的原因有哪些？

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踝关节扭伤早期治疗措施正确的是（）

A. 冷敷
B. 热敷
C. 针灸
D. 贴膏药

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光电二极管色敏器件（即双结二极管）的结构特征和工作原理，与紫外光电二极管有何相似？

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使用中的氧气瓶和乙炔气瓶应垂直放置并固定起来，氧气瓶和乙炔气瓶的距离不得小于（）。

A. 3m³
B. 5m³
C. 8m³

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You are the administrator of 20 Windows XP Professional computers. Each computer has one hard disk that has three volumes named C, D, and E. Each volume is 4 GB in size and has approximately 1 GB of available space. The total physical memory of each computer is 196 MB in size. The paging file on each computer is located on drive D. A user named Andrea reports that every day, one hour after she starts her Windows XP Professional computer, the computer appears to perform very slowly for 15 seconds. This always happens after she receives an error message stating that the system is low on virtual memory. You want to improve the performance of Andrea's computer. You do not want to install additional memory. What should you do?（）

A. Increase the initial size of the paging file.
B. Move the current paging file to the system drive.
C. Increase the Buffers setting in the Config.sys file.
D. Enable the Adjust for best performance of: System cache memory usage option.

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