Even plants can run a fever, especially when they are under attack by insects or disease. But (21) humans, plants can have their temperature (22) from 3,000 feet away— straight up. A decade ago, (23) the infrared(红外线的)scanning technology developed for military purpose and other satellites, physicist Stephen Paley (24) a quick way to take the temperature of crops to determine (25) ones are under stress. The goal was to let farmer (26) target pesticide spraying (27) rain poison on a whole field, which (28) include plants that don’t have the pest problem.
Even better, Paley’s Remote Scanning Services Company could detect crop problem before they became (29) to the eye. Mounted on a plane flown at 3,000 feet (30) , an infrared scanner measured the heat emitted by crops. The data were (31) into a color-coded map showing (32) plants were running "fev
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Supermarket{{/B}} Most supermarkets need a very large floor area, sometimes at least ten times as big as that of an ordinary shop. There are usually two doors, one as an entrance and the other as an exit. The rest of the side facing the street is largely of plate glass, with goods or advertising material displayed. The other three walls are normally decorated in light colours, giving an impression of cleanliness (清洁)and brightness. Most supermarkets are on one floor only. Goods being stored in rooms at the back or upstairs. At right-angles to the window stretch long structures about six feet high with a number of shelves on each side. Similar shelf units or frozen food containers extend round the walls. Broad aisles(通道)between the shelf units and ample(足够的)space between them A. The shopper. B. The customer. C. The cashier. D. The purchaser. [单项选择]用烘干法测定含水率时,得到含水率的平均值为20%,标准差为1%,那么其偏差系数为()。
A. 5 B. 0.5 C. 0.05 D. 0.01 [单选题] 根据现行宪法,审计机关在( )领导下,依照法律规定独立行使审计监督权,不受其他行政机关、社会团体和个人的干涉。 (1分)
A. · 国务院 B. · 国务院总理 C. · 全国人民代表大会常务委员会 D. · 全国人民代表大会常务委员会委员长 [单项选择]以下有关计算机病毒的描述,不正确的是
A. 特殊的计算机部件 B. 传播速度快 C. 人为编制的特殊程序 D. 危害大 [简答题]辐射段外壳是5mm左右的钢板(或6mm钢板)专制而成的卧式圆筒。
[单选题] 在牵引滑翔机的航空器上担任机长必须已经在用于牵引滑翔机的航空器类别、级别和
型别(如适用)上记录了至少...小时的机长时间 A. 1000 B. 150 C. 100 [单选题] 公安机关对与违反治安管理行为有关的场所、物品、人身可以进行检查。检查时,人民警察不得少于()人
A. 3 B. 2 C. 1 D. 4 [单选题]项目监理机构收到施工单位报送的施工控制测量成果报验表后,应由() 签署审查意见。
A.总监理工程师 B.总监理工程师代表 C.专业监理工程师 D.监理员 [单项选择]下列统计调查属于全面调查的有()
A. 普查 B. 抽样调查 C. 重点调查 D. 典型调查 [简答题]
阅读下列材料: [单项选择]DGS8800e数字调速系统,数字调节器(Regulator)的死区限值为±2RPM且恒定供油量控制模式模式没被激活,参数77设定值为2,那么则此时调节器的死区或不灵敏区为()。
A. ±0.5RPM B. ±1RPM C. ±2RPM D. ±4RPM [简答题]线控器的功能是什么?
[单选题]胸骨左缘 2-3 肋间连续性机械样杂音:( )
A.动脉导管未闭 B.室间隔缺损 C.肺动脉狭窄 D.房 间隔缺损 E.弗洛四联症 [单项选择]用于襟翼位置指示的位置传感器位于()
A. 每个襟翼作动器上 B. 右侧的内侧襟翼上 C. 外侧襟翼上 D. 以上全不正确 [多选题]运行中呼吸器应呼吸畅通,吸湿剂潮解变色部分不应超过总量的2/3。( )的密封应良好,吸湿剂变色应由( )开始,如上部颜色发生变色则说明呼吸器密封不严。
A.呼吸器 B.油杯 C.底部 D.上部 [单项选择]
与DME合装的DVOR台,1分钟内常辐射( )组识别码。 A. 2 B. 3 C. 5 D. 6 [单项选择]承包人不能按期开工,应在不迟于协议书约定的开工日期前( )天,以书面形式向工程师提出延期开工的理由和要求。
A. 7 B. 14 C. 8 D. 48 [多选题]火灾扑灭后,发生火灾的单位和相关人员应当按照消防救援机构的要求( )。
A.保护现场 B.协助控制嫌疑人 C.协助调查火灾原因 D. 接受事故调查 我来回答: 提交
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