| Even plants can run a fever, especially
when they are under attack by insects or disease. But (71)
humans, plants can have their temperature (72) from
3,000 feet away—straight up. A decade ago, (73) the infrared
(红外线的) scanning technology developed for military purpose and other satellites,
physicist Stephen Paley (74) a quick way to take the
temperature of crops to determine (75) ones are under stress.
The goal was to let farmers (76) target pesticide spraying
(77) rain poison on a whole field, which (78)
includes plants that don’t have the pest problem. Even better, Paley’s Remote Scanning Services Company could detect crop problem before they became (79) to the eye. Mounted on a plane flown at 3,000 feet (80) , an infrared scanner measured the heat emitted by crops. The A. at night B. for the night C. in night D. overnight [单选题] 冷补偿是在管道冷态时预加一个与热应力方向相反的冷紧力，以减小运行中管道的应力和管道对支吊点的作用力。 [1分]
A.正确 B.错误 [填空题]型号中以字母Q开头的产品属于________类金具，以字母X开头的产品属于________类金具。
[判断题]如果选择开通语音/短信功能，则需根据实名制管控要求填写语音/短信的周期用量限额。
A.正确 B.错误 [判断题]特种作业人员应当符合具有中专及以上文化程度。
[多选题]抱杆就位后，四侧拉线应（ ），组塔过程中应有专人值守。
A.放松 B.收紧 C.固定 D.不固定 [简答题]摩擦按接触面运动的形式分为几种？
[单选题]开行超长列车时，在（ ）内确定。
A.班计划 B.阶段计划 C.班计划及阶段计划 我来回答: 提交
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