患者，男，65岁。慢性肺源性心脏病史5年。近日受凉后发热，咳喘加重，面色暗，口唇发绀

我国是一个水资源短缺的国家。近年来，为了合理调节居民生活用水，一些地方开始积极推进阶梯式水价改革。阶梯式水价的实施    [ ]

①可以增强人们的节约意识

②是为了增加人们对水商品的消费

③可以调节水商品的需求量

④是为了降低消费者的消费成本    

A．①②    

B．①③    

C．②④    

D．③④

根据营业税法律制度的规定，下列各项中应当缴纳营业税的有（）。

A.某单位销售房产

B.某企业转让土地使用权

C.某公司以房产投资入股

D.某公司以房产抵债

The MPA program is designed for present and future leaders of the public and nonprofit sectors. The program emphasizes broad-based public policy analysis and management knowledge, while students pursue one or more specialized policy fields. The core devotes considerable time to mastering the basic analytic and quantitative skills needed by good analysts and managers. The curriculum draws upon the wide range of academic disciplines throughout the University of Washington. The school offers a series of special management-skills workshops each year in addition to its regular course offerings. Distinguished public-sector practitioners typically teach these seminars. Recent workshops have covered such topics as writing; effective oral presentations; building teams; managing a diverse work force; financial resources in the public sector; managing consultants; and planning public participation. The program aims at enhance the trainee’s policy analysis ability, familiarize them with skill of public administration, improve their ability of learning, adapting and leading, so as to enhance their executive competence and their overall qualities.

在同一种进料组成、热状况及回流比的情况下，若希望得到相同的馏出液组成及回收率时，利用直接蒸汽加热时所需理论板数比用间接加热时所需理论板数（）。

A.多一些

B.少一些

C.相同

D.无法比较

简述园林给水管网的布置形式。