Cooperative Online Resource Catalog (OCLC)合作的联机资源目录(OCLC) Computational Optimization Research Center (Columbia University)计算优化研究中心(哥伦比亚大学) Career Opportunities Resource Center职业机遇资源中心 Canberra Off-Road Cyclists (Canberra, Australia)堪培拉越野自行车(坎培拉,澳洲) California Organic Recycling Council加州的有机回收理事会 Consortium on the Ocean's Role in Climate联盟在海洋的作用,在气候 Conventional Ordnance Release Computer传统的军械释放的计算机