排序方式: 共有5条查询结果,搜索用时 15 毫秒
1
1.
资源的稀缺性和外部环境的强制约,使可持续发展战略正成为我国及世界各国普遍采取的基本战略。可持续发展的基本定义是既满足当代人的需要,又不能损害子孙后代满足需求能力的发展。 相似文献
2.
本文基于我国通用航空发展严重滞后的实际情况,认为"十三五"时期是推进我国通用航空发展的关键时期,迫切需要国家采取相关的政策措施,促进我国通用航空的发展。 相似文献
3.
铁路改革的总体目标是:政企分开,建立真正的现代企业制度,企业重组,打破行业垄断,引入竞争机制。具体方案为:建立国家铁路控股公司,下设若干区域性路网公司和铁路客货运输公司及专业运输公司,分别负责铁路的建设和运输经营管理,实现政企分开、网运分离。组建非经营性路网管理机构,实现铁路分类管理、建设。 相似文献
4.
5.
Isolation and Characterization of Microorganisms for Degradation of Minimal Oils and Fats at Low Temperatures 总被引:1,自引:0,他引:1
The isolation of microorganisms for biodegradation of minimal fats and oils at low temperatures was reported. By using rapeseed oil as a sole carbon source, six strains were isolated from five kinds of oils/fats-contaminated wastewater, soil, and active sludge. Among them, two strains which show the highest oil removal ratios were identified as Pseudomonas pseudoalcaligenes and Pseudornonas mendocina, respectively. The experiments of orthogonal impact conditions show that the optimal oil degradation condition is at pH 8.0, 5 C and 100 mg/L oil. Under this condition, the rapeseed oil degradation ratios of two strains after 24 hours amount to 92. 6% and 92.0% respectively, whereas the removal ratios of lard decrease to 39.5% and 54.3%. 相似文献
1