首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Even plants can run a fever, especially when they’re under attack by insects or disease. But unlike humans, plants can have thei
Even plants can run a fever, especially when they’re under attack by insects or disease. But unlike humans, plants can have thei
admin
2013-04-11
14
问题
Even plants can run a fever, especially when they’re under attack by insects or disease. But unlike humans, plants can have their temperature taken from 3,000 feet away—straight up. A decade ago, adapting the infrared scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide (杀虫剂) spraying rather than rain poison on a whole field, which invariably includes plants that don’t have pest (害虫) problems.
Even better, Paley’s Remote Scanning Services Company could detect crop problems before they became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running "fevers". Farmers could then spot-spray, using 40 to 70 percent less pesticide than they otherwise would.
The bad news is that Paley’s company closed down in 1984, after only three years. Farmers resisted the new technology and long-term backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. "This technique can be used on 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? remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago.
Farmers can save a considerable amount of pesticide by______.
选项
A、resorting to spot-spraying
B、consulting infrared scanning experts
C、transforming poisoned rain
D、detecting crop problems at an early stage
答案
A
解析
依据文章第2段最后一句。
转载请注明原文地址:https://kaotiyun.com/show/ZFii777K
本试题收录于:
GCT工程硕士(英语)题库专业硕士分类
0
GCT工程硕士(英语)
专业硕士
相关试题推荐
ThepurposeofGeorgeSpilich’sexperimentsis______.GeorgeSpilich’sexperimentwasconductedinsuchawayasto______.
I’d______hisreputationwithotherfarmersandbusinesspeopleinthecommunity,andthenmakeadecisionaboutwhetherornot
Whatkindofpersonneedsthisservice?Themainpurposeofthispassageis______.
Whichofthefollowingisthemainpurposeofthisannouncement?Timesformoviesandconcertsarenotlistedinthisannouncem
Wecan’taffordtoletthesituationgetworse.Wehavetotake______toputitright.
Athoroughstudyofbiologyrequires______withthepropertiesoftreesandplants,andthehabitofbirdsandbeasts.
Evenplantscanrunafever,especiallywhenthey’reunderattackbyinsectsordisease.Butunlikehumans,plantscanhavethei
Evenplantscanrunafever,especiallywhenthey’reunderattackbyinsectsordisease.Butunlikehumans,plantscanhavethei
随机试题
设z(x,y)是方程=x2+2y满足条件z(x,x2)=1的解,则∫01z(1,y)dy=()
A.出血性休克B.创伤性休克C.感染性休克D.过敏性休克E.心源性休克急性阻塞性化脓性胆管炎引起的休克是
根管治疗过程发生的并发症中,可能引起严重后果的是
在设备管道安装施工中,需进行脱脂处理时,常用的脱脂剂除四氯化碳、精馏酒精外,还可以采用( )。
设备吊装的下列参数中,与起重机最大起升高度不相关的是()。
国际团全陪是指受_______委派,作为国内组团旅行社的代表,在领队和地方陪同导游人员的配合下,实施接待计划,为_______提供在_______全程陪同服务的工作人员。
Manywomen______agoodsalary,buttheychosetostayathomeforthefamily.
孙中山在遗嘱中说:“积四十年之经验,深知欲达到此目的,必须唤起民众及联合世界上平等待我之民族。共同奋斗。”这段话的核心主张是
Theincreaseininternationalbusinessandinforeigninvestmenthascreatedaneedforexecutiveswithknowledgeofforeignl
SummerforCollegeStudentsCollegestudentsspendtheirsummersinmany【T1】______ways.Manystudents【T2】______hardatsumme
最新回复
(
0
)