问题 单项选择题

某外商投资的化妆品厂的机电工程项目由某机电工程安装公司负责,工程项目主要包括:厂房内通风空调、消防、电气、工艺管道、纯水系统等。由于工艺管道、纯水系统等设计要求十分严格,必须在施工前进行计量检测。按照《计量法》规定,选用合适的检测器具,并对计量器具进行计量检定,从而确保计量器具的准确一致。施工单位为确保工作质量,十分看重对计量器具的计量检定程序,’依法经规定部门检定合格后交付使用。由于计量检测程序认真进行,保证了工程的顺利施工,按期完成任务,经验收无质量安全问题,得到业主的好评。

( )是指评定计量器具的计量性能,确定其是否合格所进行的全部工作,是一项法制性、科学性很强的技术工作。

A.计量检定

B.计量检测

C.计量评定

D.计量分析

答案

参考答案:A

选择题
单项选择题

Even plants can run a fever, especially when they are under attack by insects or disease. But (1) humans, plants can have their temperature (2) from 3,000 feet away—straight up. A decade ago, (3) the infrared scanning technology developed for military purpose and other satellites, physicist Stephen Paley (4) a quick way to take the temperature of crops to determine (5) ones are under stress. The goal was to let farmer (6) target pesticide spraying (7) rain poison on a whole field, which (8) include plants that don’t have the pest problem.

Even better, Paley’s Remote Scanning Services Company could detect crop problem before they became (9) to the eye. Mounted on a plane flown at 3,000 feet (10) , an infrared scanner measured the heat emitted by crops. The data were (11) into a color-coded map showing (12) plants were running "fevers". Farmers could then spot spray, using 50 to 70 percent less pesticide than they (13) would.

The bad news is that Paley’s company closed down in 1984, after only three years. Farmers (14) the new technology and long-term backers were hard (15) . But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to (16) into operation. Agriculture experts have no doubt about the technology works. "This technique can be used (17) 75 percent of agricultural land in the United States," says George Oerther of Texas A&M. Ray Jackson, who recently retired from the Department of Agriculture, thinks (18) infrared crop scanning could be adopted by the end of the decade. But (19) Paley finds the financial backing (20) he failed to obtain 10 years ago.

8()

A.dominantly

B.deliberately

C.accidentally

D.invariably