投标单位资格审查包括()。
A、企业注册资格
B、企业经营管理状况
C、企业纳税情况
D、企业的基本情况
E、承包同类工程的经历
参考答案:A, B, D, E
One tool that is useful during both analysis and design is the ______, which is a pictorial representation of the items of information(entities) within the system and the relationships between these pieces of information.
A.data dictionary
B.dataflow diagram
C.use case diagram
D.entity-relationship diagram
不是由主动脉瓣病变引起主动脉瓣关闭不全的疾病是()
A.感染性心内膜炎
B.风湿性心脏病
C.先天性二叶主动脉瓣
D.梅毒性主动脉炎
E.主动脉瓣黏液样变性