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问题 选择题

下图为世界某大洲局部区域示意图。读图完成下题。

图中P处以南海岸线曲折适宜建港，但目前少大港。其原因可能是[ ]

A．属于温带大陆性气候，降水少

B．资源贫乏，环境人口容量小

C．山脉直逼西海岸，经济腹地小

D．纬度较高，封冻期长

答案

答案：C

单项选择题

现代运动训练活动的主体是 ( )

A．现代科学技术

B．管理人员

C．教练与运动员

D．科研、医务人员
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单项选择题

A basic premise of OGSA is that everything is (66) by a service: a network enabledentity that (67) some capability through the exchange of messages. Computational resources, storage resources, networks, programs, databases, and so forth are all (68) . This adoption of auniform service-oriented model means that all components of the environment are virtual. Morespecifically, OGSA represents everything as a Grid service: a Web service that conforms (69) a set of conventions and supports standard interfaces for such purposes as lifetime management. This core set of consistent interfaces, from which all Grid services are implemented. (70) the construction of hierarchical, higher - order services that can be treated in a uniform way across layers of abstraction.

66（）

A．defined

B．represented

C．used

D．passed
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