Communication Information Systems (SHAPE)通讯信息系统(形) Consumer and Industry Services消费者和工业服务 Commonwealth of Independent States独联体 Congressional Information Service国会情报处 Carcinoma in Situ原位癌 Chemical Information System化学情报系统［美］ Corporate Identity System企业识别系统 Career Information System职业情报系统 Creative Intelligent Systems (Workshop)创造性的智能化系统(车间) Central Information System中央的信息系统 Clinical Information System临床信息系统 Certificate Issuance Software证书签发的软件 Contractor Information Systems承包商的信息系统 Corporate Information Security公司信息安全 Center for International Studies国际研究中心