【简答题】经营国内旅游业务和入境旅游业务的旅行社,应当存入质量保证金()万元;经营出境旅游业务的旅行社,应当增存质量保证金()万元。质量保证金的利息属于()所有。
【单选题】以下哪一项不属于直接热能回收系统的优点?
【单选题】What is the difference between Peter and Nelson in their attitude to pet-keeping?
A.
Peter disapproves of treating animals like human beings, but Nelson doesn't think so.
B.
Nelson believes that pet-keeping is a natural need of human beings, but Peter doesn't think so.
C.
Nelson makes a distinction between human friends and animals, but Peter doesn't.
【多选题】关于利率期限结构的Nelson & Siegel估计方法说法正确的是
B.
通过调整水平参数、斜率参数与曲率参数Nelson & Siegel估计方法可以拟合出不同类型的利率期限结构形状;
C.
Nelson & Siegel方法克服了样条函数法对数据过于敏感的问题;
D.
Nelson & Siegel估计方法的参数个数少于样条函数法
【判断题】未被污染的塑料餐具(便当盒、碗、匙)属于可回收垃圾。
【判断题】未被污染的塑料餐具(便当盒、碗、匙)属于可回收物。()
【单选题】《素问·痹论》认为,痹邪“客于六府”的病本为