在火场上用“1301”灭火属于()灭火法。（A）冷却 （B）隔离 （C）抑制 （D）

某中学历史兴趣小组的同学要做一期介绍洋务派思想的板报，请你帮助他们从选项中找出属于洋务派的言论

①“法者，天下之公器；变者，天下之公理” 

②“中学为内学，西学为外学；中学治身心，西学应世事”

③“要本之图，在人心不在技艺”    

④“中国欲自强，莫如学习外国之利器” [ ]

A、①②③④　     　

B、①②③　      

C、②④　  　

D、②③

拉丁美洲面积最大的国家是______，其首都是______．

试述慢性盆腔炎的治疗方法。

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.

13（）

A.otherwise

B.still

C.thus

D.therefore

催化剂硫化前，反应系统（）合格

A、氮气置换

B、贯通试压

C、气密试验

D、紧急泄压试验