( )是指系统或产品在规定的条件和规定的时间内，完成规定功能

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问题单项选择题

( )是指系统或产品在规定的条件和规定的时间内，完成规定功能的能力。

A．可靠性

B．可靠度

C．故障率

D．维修度

答案

参考答案：A

解析：所谓可靠性是指系统或产品在规定的条件和规定的时间内，完成规定功能的能力。

阅读理解

Interested in Chinese calligraphy (书法) experiences? By joining our Beijing Tours Xi’an Tours or Guilin Tours, visitors can add Chinese calligraphy classes to the tour at, very reasonable prices.

Most of the big museums in China have calligraphy collections. See our Museums Tours.

For travelers who are interested in the history and culture of Chinese calligraphy, Museum of Chinese Characters in Anyang City, Henan Province is a good choice. The Stele Forest Museum in Xi’an City houses many works of famous ancient calligraphers as well as precious stone sculptures (雕塑).

小题1:Where can we find this piece of writing?

A．In a story book.

B．In a textbook.

C．In a cookbook.

D．In a travel magazine.小题2:What can we see in the Stele Forest Museum in Xi’an City?

A．Statue of ancient calligraphers.

B．Precious stone sculptures.

C．City houses

D．Famous workers.

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单项选择题

可燃气体探测仪（）在有可燃气体场所打开仪器的外壳。

A.视情

B.可以

C.严禁

D.无规定

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