下列哪项不属于综合布线产品选型原则。()
A.满足功能和环境要求
B.选用高性能产品
C.符合相关标准和高性价比要求
D.售后服务保障
参考答案:B
-Jim had nothing for breakfast this morning , ?
- . He got up too late .
A. had he, Yes. B. hadn' t he , Yes. C. did he , No .
简述国有资产的分类方法。