搜题请搜索小程序“爱下问搜题”
问题 单项选择题

目前我国发现传染性肺结核病人的主要方式是

A．一般人群的X线筛检
B．对有可疑肺结核症状者的痰涂片显微镜检查
C．依据症状、体征
D．结核菌素试验调查
E．流行病学调查

答案

参考答案：B

解析：痰检是目前我国发现结核病人的主要方式。

单项选择题

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.

（66）是（）

A.concentrative

B.distributed

C.aggregate

D.distributing
查看答案
实验题

某同学设计了一套验证碳酸具有酸性而二氧化碳没有酸性的实验。他首先用紫色石蕊试液浸泡滤纸，晒干后折成纸花，然后按下图所示分别进行：

⑴往紫色石蕊纸花喷上稀醋酸，紫色石蕊纸花显________色；

⑵在B实验中，当加入水后，紫色石蕊纸花显________色，B实验的作用是______________；

⑶在C实验中，紫色石蕊纸花变               色，这一实验结果说明____________；

⑷通过以上实验，尚未达到验证的目的，若要达到验证的目的，你的方法是_________。

查看答案