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问题 单项选择题

(4—6题共用题干)女性，39岁，颈前区肿块4年，近年来易出汗，心悸，渐感呼吸困难，体检：晨起心率105次／分，BP120／70mmHg，无突眼，甲状腺Ⅲ°肿大，结节状，心电图示窦性心律不齐。

初步的诊断最可能是

A．原发性甲亢

B．单纯性甲状腺肿

C．继发性甲亢

D．桥本甲状腺炎

E．亚急性甲状腺炎

答案

参考答案：C

单项选择题

对新船或经重大改建的船舶进行倾斜试验的目的是（）

A．以确定空船状态下的重心位置KG

B．以确定空船状态下的初稳心高度

C．以确定空船状态下的浮心高度KG

D．以确定空船状态下的KG和GM
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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.

7（）

A. more than

B. less than

C. rather than

D. other than
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