优化旅游产品体系，需要实现“四态合一”，即是指（）
A.生态
B.文态
C.形态
D.业态
E.拟态
参考答案：A, B, C, D
过敏性紫癜下列实验室检查结果哪项符合（）
A.出血时间延长
B.凝血时间延长
C.凝血酶原时间延长
D.毛细血管脆性试验阳性
E.血块回缩不良
Which of the following is the most common non-behavioral reason for projects being completed behind schedule and going over budget ？（）
A．Selecting a wrong person as the project manage
B．Selecting a wrong person as the sponso
C．Accepting a high-risk projec
D．Inadequately defined requirement
