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 spr
A. get off
B. get out
C. get away
D. get back
Until recently, the British system of money was not based on the decimal system. But in February, 1971, Great Britain (41) its currency to the decimal system(十进制). The pound is still the basic monetary unit, but it is now made up of 100 pennies (42) pence. In the new system, there are six coins. The coins are known (43) their values. They have the following values: 1/2 pence or penny, 1 penny, 2 pence, 5 pence, 10 pence, and 50 pence.
In Great Britain, the word note is used to refer to paper money. The notes you would most probably use if you (44) England are the one-pound note, the five-pound note, and the ten-pound note.
It isn’t (45) for a country to convert(转换) its currency from one system to (46) . In England the Decimal Currency Board spent $ 3 million to explain the new system to the people.
The change (47) the decimal method of counting is to go much (48) than the money system. Great Bri
A. machine
B. machinery
C. instrument
D. device
| The range in frequencies of musical
sounds is approximately 20-20,000 cycles per second (cy/sec). Some people can
hear higher frequencies khan others. Longitudinal waves whose frequencies are
higher than those within the audible range are called ultrasonic frequencies.
Ultrasonic frequencies are used in sonar for such purposes as submarine
detection and depth finding. Ultrasonic frequencies are also being tried for
sterilizing food since these frequencies kill some bacteria. Sound waves of all
frequencies in the audible range travel at the same speed in the same medium. In
the audible range, the higher the frequency of the sound the higher is the
pitch. The term supersonic refers to speed greater than sound. An airplane
traveling at supersonic speed is moving at a speed greater than the speed of
sound in air at that temperature. Mach 1 means a speed equal to A. 200 cy/see B. 5,000 cy/sec C. 10,000 cy/sec D. 20,000 cy/sec [多项选择]病历摘要：3岁患儿，自生后6个月开始出现紫绀，有杵状指。平时活动后发绀加重。查体：发育营养稍差，心前区隆起，心尖搏动弥散，并触及收缩期震颤，胸骨左缘第4肋间可闻及Ⅲ～Ⅳ粗糙的收缩期杂音，胸部X线检查示“靴型”心影，肺血减少。法洛四联症患儿的青紫原因是（）
A. 动脉导管持续开放 B. 肺动脉狭窄使肺血减少，气体交换减少 C. 室间隔缺损致左向右分流 D. 主动脉血中混有静脉血 E. 右心室肥厚 F. 与肺动脉狭窄程度有关 [多选题]《固定式压力容器安全技术监察规程》对容器类别的划分，主要考虑下列( )因素。
A.设计压力 B.介质 C.容积 D.温度 [单项选择]患者，男性，务农。颈项后长疖2周，患处红肿痛，按压患处皮肤软有波动感．口服、肌注抗生素治疗，症状缓解不明显。根据患者目前情况，首选何种治疗方法缓解症状最快（）
A. 紫外线 B. 短波 C. 患处切开引流 D. 微波 E. 毫米波 [单选题]布散于皮肤、肌肉和孔窍中的是
A.气 B.血 C.津 D.液 E.精 [单选题]使用手压式雾化器进行雾化吸入时，每两次喷药间隔为
A.1-2小时 B.2-3小时 C.3-4小时 D.4-5小时 E.5-6小时 [单选题]机车日车公里是平均每台运用机车在（ ）内走行的公里数。
A. 一天 B. 一夜 C. 一昼夜 D. 以上说法均错误 [单项选择]社区卫生服务特点中不包括
A. 综合性服务 B. 连续性服务 C. 协调性服务 D. 可及性服务 E. 特需性服务 [填空题]采用圆曲线型竖曲线时，若相邻坡段的坡度代数差<--NRC-->，应设置竖曲线。
[单选题]单轨吊机车必须前有照明，后有（），机车运行时，严禁将头或身体各部探出车外。
A.喇叭 B.红尾灯 C.后置照明 [单项选择]癫狂的病理因素主要是（）
A. 气、痰、火、瘀 B. 风、火、痰、瘀 C. 风、气、火、瘀 D. 风、痰、气、瘀 E. 风、痰、火、气 [判断题]与带电设备距离小于规定的作业安全距离，但需采用带电作业措施开展的邻近带电体的不停电工作可不选用带电作业工作票。
A.正确 B.错误 我来回答: 提交
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