流域环境规划的理论和方法基础为（）、流域分析与流域保护、流域生态学、景观生态学以及恢复生态学。
参考答案：系统分析与优化
属于与工作有关疾病的是（）
A.建筑工人的腰背痛
B.高空坠物致工人脚外伤
C.收割水稻致农民手外伤
D.纺织工人的噪声性耳聋
E.搬运工人的脚胼胝
When additional or excess reserves are injected into the U.S. banking system, the money supply can potentially increase by an amount equal to the additional excess reserves multiplied by which of the following()
A. Reciprocal of one minus the required reserve ratio.
B. Reciprocal of the required reserve ratio.
C. Reciprocal of the potential deposit expansion multiplier.
