结论：CT质量综合五步管理是提高CT质量管理的较佳方法。

Conclusion "Management method of five steps" is the best way to improve quality of CT.

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结果：经分析比较及实际统计表明：CT质量综合五步管理法最能提高CT综合质量。

Results According to the statistics, "management method of five steps"is the best way to improve quality of CT scanner.

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纳斯达克综合指数大涨超过百分之五点四。

And the Nasdaq Composite Index shot up over 5.4 percent.

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