第27题:[单选题] When the lender and the borrower have different amounts of information regarding a transaction, ________ is said to exist. A. asymmetric information B. adverse selection C. moral hazard D. fraud 参考答案:A
第28题: [单项选择]鉴别消化性溃疡和慢性胃炎的最好方法是 A. 粪便隐血试验检查 B. X线钡餐检查 C. 纤维胃镜检查 D. 五肽胃泌素胃液分析 E. 胃黏膜脱落细胞检查 参考答案:C