噪音和大气污染目前已成为重庆市民关心的两大焦点问题。近年来重庆城市建设迅猛发展，随之带来的建筑施工噪音令市民们头痛不已。而随着城市汽车数量的成倍增加以及餐饮业的繁荣，大气污染问题也成为山城环境保护的又一难题。事实上，重庆市一直十分重视环保问题。市政府于去年底启动了一项“净空”工程，关闭了大气污染严重的企业，这一工程目前已初见成效。
Noise pollution and air pollution have become the two major concerns of citizens in Chongqing. The city construction has experienced sharp development in the recent years, but the accompanied noises are fairly annoying. With the rapid geminating increase of the cars and the prosperity of the restaurants, air pollution becomes another conundrum. As a matter of fact, the Chongqing Government has always been posing emphasis on environment protecting. The municipal government started an air decontamination project at the end of last year, closing the enterprises that cause heavy pollutions. And the project has begun to take effects.
在实践中常用来检出随机误差的是
一批新的抗菌药物纸片用质控菌株检查应
临床常用的质控菌株更换应至少
临床质控菌株在4℃、大豆酪蛋白消化液琼脂上保存，传代应
根据正态分布下面积规律，血糖的一组质控数据的均值为5.0mmol／L，其标准差为0.2mmol／L。其概率为99.7％的区间为
根据正态分布下面积规律，血糖的一组质控数据的均值为5.0mmol／L，其标准差为0.2mmol／L。其概率为95.5％的区间为
根据正态分布下面积规律，血糖的一组质控数据的均值为5．0mmol／L，其标准差为0.2mmol／L。其概率为68.2010的区间为
在实践中常用来检出系统误差的是
EQA是由专门机构所采用的一系列办法，对实验室的检验结果进行评价，其实质是
室间质控应在下列哪项的基础上进一步实施
