设计设备管理信息系统必须遵循一定的原则，只有遵循这些原则，设计出的系统才是合理的、高效的。
The design of equipment management information system must be in accord with certain principle which is essential to design rational and high-efficiency system.
房地产项目只有实施了有效的风险管理，才能真正实现项目质量优良、成本合理和按时完工。
After all, only those Real estate projects who implies the effective risk management could accomplish the project with high quality, reasonable cost and sufficient time.
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