在项目实施中，由于材料价格上涨导致成本增加的风险，属于（）风险。
A.组织
B.工程环境
C.经济与管理
D.技术
参考答案：C
Which of the following statements regarding exchange-traded derivatives is FALSE Exchangetraded derivatives :()
A. are illiquid and have secondary markets.
B. are standardized contracts.
C. often trade in a physical location.
关于肝硬化下列说法哪些是错误的（）
A.肝炎后肝硬化多数为大结节性肝硬化
B.酒精本身对肝有直接损害作用
C.血吸虫肝硬化应称为血吸虫病性肝纤维化
D.高浓度胆酸及胆红素对肝细胞有损害作用
E.慢性充血性心力衰竭导致淤血性肝硬化
