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问题 单项选择题 B型题

引起肾综合征出血热临床症状较重的病毒是（）

A.辛诺柏病毒

B.汉城病毒

C.汉坦病毒

D.普马拉病毒

E.泰国病毒

答案

参考答案：C

解析：汉坦病毒由于抗原性不同分为20个以上的血清型，其致病性不同，其中在我国主要流行的是Ⅰ型汉滩病毒和Ⅱ型汉城病毒，Ⅰ型所致临床症状较重，Ⅱ型次之，Ⅲ型普马拉病毒多为轻型，辛诺柏病毒主要引起以呼吸窘迫和呼吸衰竭为主要表现的汉坦病毒肺综合征。

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.

9（）

A.seeming

B.clear

C.apparent

D.visible
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判断题

行政机关依照法律、法规的规定实施行政强制措施。
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