问题 判断题

量值传递是将计量基准所复现的单位量值,通过计量检定(或其他传递方式),传递给下一级的计量标准,并依次逐级传递到工作计量器具,以保证被测对象的量值准确可靠。 ( )

答案

参考答案:

解析: 量值传递是自上而下通过逐级检定而构成检定系统。量值传递就是通过对计量器具的检定或校准,将国家基准(标准)所复现的计量单位量值,通过计量标准逐级传递到工作计量器具,以保证对被测对象所得量值的准确一致。传递一般是自上而下,由高等级向低等级传递,它体现了一种政府的意志,有强制性的特点。

阅读理解

阅读理解, 根据短文内容,选择最佳选项.

    The nine-year-old Marc Yu is called Little Mozart. He is too short to reach the pedals  (踏板) of a

piano. Marc, from California, USA, says, "The problem is that my legs aren't straight enough, so I have

to get very close to the piano."

    Marc's 34-year-old mother played Beethoven's CDs to him when she was pregnant (怀孕的). Marc

started playing the piano at a birthday party when he was only two. While the other children were  singing "Twinkle, twinkle, little star …", he walked over to the piano and started playing the song. It  astonished

his mother, because that was the first time he'd been near a piano. Marc gave his first public performance,

playing Beethoven, at six, the same age as Mozart. After that concert, Marc won a £225,000 university

scholarship (奖学金).

    At present he practices the piano eight hours a day. He also studies  part-time at the famous  Colbum

Music School  in Los Angeles, and  flies once a month to China for lessons at Shanghai Music School.

Marc  says, "I like  playing  the piano  because it makes me have a  lot of different  feelings - sadness,

excitement, happiness and so on. I like playing  difficult pieces,  especially those that my teacher says I

shouldn't."

1. The nine-year-old Marc Yu is from        .

A. China

B. France

C. Canada

D. the United States

2. Marc played the piano at the age of        for the first time.

A. two        

B. five        

C. six          

D. nine

3. According to the passage, the underlined word "astonished" means "     " in Chinese.

A. 使……理解

B. 使……担心

C. 使……惊奇

D. 使……难过

4. At present Marc practices playing the piano        .

A. once a month

B. eight hours a day

C. in his free time            

D. only on weekends

5. What Marc says in the last paragraph tells us that       .

A. he likes challenges

B. he doesn't like challenges

C. he is afraid of challenges

D. he wants to give up music

填空题