问题 多项选择题

在GB/T2828.1中,下述对检验水平的论述中,正确的是()。

A.I、Ⅱ、Ⅲ水平的判断力逐级提高

B.I、Ⅱ、Ⅲ水平的判断力逐级下降

C.对同一检验水平,N增加时,n/N也增加

D.对同一检验水平,N增加时,n/N减少

E.对同一检验水平,N增加时,n/N减少

答案

参考答案:A, D

解析:在GB/T2828.1中,检验水平Ⅲ的判别能力大于Ⅱ,Ⅱ的判别能力大于I;检验水平的设计原则是:如果批量增大.样本量一般也随之增大,而当批量N越大,n与N的比值反而减少。故选A、D。

单项选择题
填空题


Statistics from China (1) be mind boggling: 1.2 billion (2) , 1.73 trillion cigarettes smoked in a year, 7,000 different (3) of woody plants. But amid all of these staggering sums, one factoid stands (4) for both its audacious size and for what it says about China’s future: there are 630 million Chinese under the age of 24. That’s a lot of (5) energy to burn. Materialism may be the (6) preoccupation among China’s young people these days, but just beneath the surface lies a feeling (7) wounded nationalist pride and an ever-deepening spiritual hunger. It isn’t clear where China’s young people are headed. But this is a generation that, by its (8) size and certain talents, will (9) the world’s destiny.
Here’s another sobering statistic: this is Terry McCarthy’s 22nd, and final, cover (10) for TIME Asia-he’s leaving the region (11) three years to become TIME’s Los Angeles (12) chief. McCarthy, who has indefatigably crisscrossed Asia out of his twin bases of Hong Kong and Shanghai, was the main driver (13) this week’s superb special report on young China. He developed the story list, guided much (14) the reporting
and wrote some of the articles. All (15) planning a swank black-tie masked ball last weekend in Shanghai. "I was (16) by the willingness of individual Chinese to write for us or talk about their (17) ," McCarthy says about the special (18) . "These are the guys (19) are going to be running the country in 20 (20) ." If we’re lucky, McCarthy will be back in the region long before then.