The grid computing is a new (66) technology connecting the distributed and (67) 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 (68) 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 (69) 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 (70) the performance of the system.

（69）是（）

A.decrease

B.balance

C.enhance

D.keep

外部招聘通常不会在下列哪种情况下发生（）

A.强有力地维持企业特有的文化和工作作风

B.补充组织中所需要的初级岗位

C.获得能够提供新思想的、并具有不同背景的员工

D.获得现有员工所不具备的技术