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问题 单项选择题

在龋病流行病学的集体备课时，王教授指出研究生甲对年龄因素的提法有一处是不对的（）。

A．5～7岁乳牙患龋达高峰

B．9岁以后乳牙患龋率下降

C．恒牙萌出即可患龋

D．30岁左右恒牙龋达高峰

E．老年人根面龋发病率上升

答案

参考答案：D

综合

读某城镇工业布局简图，回答下列问题。

(1）计划在该城市中建设电子工业基地、饮料厂、钢铁厂和化工厂，请在下表中按要求填上适当内容。

工厂序号布局理由
电子工业  
饮料厂  
钢铁厂  
化工厂  
(2）该城市工矿企业和汽车等交通工具排放的废物中含有大量的煤烟、粉尘、＿＿＿＿化合物、＿＿＿＿化合物和、＿＿＿＿化合物等有害物质，严重污染了环境。

(3）为对“三废”进行有效地处理，化害为利，可在有色金属冶炼厂附近再建一座＿＿＿＿厂，宜在火电厂附近新建的工厂是＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿。
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单项选择题

The grid computing is a new (81) technology connecting the distributed and (82) resources to the high-speed network and integrating a super-computer of processing capacity. The significance and architecture of the grid computing is explained. Several kernel technology such as OGSI, resource management, task management, task scheduling, high rate communication and security are described. Aiming at the particularity of the grid computing environment a mechanism similar to the technology of the search engine is designed to registry, discovery and (83) the resources in the grid. The whole model of the resource management is built by connecting task manager in the local resource management system to others with P2P model. The task may migrate among the task managers in order to (84) the load. The task users summit may be executed in relatively tight resource set, which will not only decrease the total communication overheads of the whole task but also (85) the performance of the system.

A. isomorphic B. different C. heterogeneous D. alien
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