在工艺流程中使用惰性气体或能放出()气体的场所,必须配备可净化空气的装置。
A.有毒
B.可燃
C.氧化
参考答案:A
初产妇,29岁,G2P2,现妊娠35周,既往孕24周因脊柱裂胎儿而行引产1次。此次妊娠早期经过顺利。妊娠32周时超声检查发现羊水过多,胎儿大于妊娠周数,未见明显畸形。孕妇体态肥胖,近期有多饮、多食、多尿症状。
与该病对妊娠的影响无关的项目是()
A.难产发生率增高
B.胎儿畸形发生率增高
C.过期妊娠发生率增高
D.妊娠期高血压疾病发生率增高
E.围生儿死亡率增高
For more than two centuries, American’s colleges and universities have been the backbone of the country’s progress. They have educated the technical, managerial, (1) and provided generation after generation of national leaders. Today educators from around the globe are turning to U. S. institutions of higher learning (2) . They are apt to find many reasons for the excellence of American universities, but (3) stand out as watersheds:Education (4) : In 1862 Congress enacted the Land-Grant College Act, which essentially extended the opportunity of higher education (5) , including such disenfranchised groups as women and minorities. Each state was permitted to sell large tracts of (6) and use the proceeds to endow at least one public college. (7) : Over the years, the decentralization and diversity of the America’s colleges and universities have promoted competition for students and resources. Competitive pressure first arose (8) . The academy’s impact really grew after World War II, when (9) commissioned by President Roosevelt argued that it was the federal government’s responsibility to (10) for basic research. Instead of being centralized in government laboratories, scientific research (11) in American universities and generated increasing investment. It also gave graduate students research opportunities and helped (12) far and wide, to the benefit of industry, medicine and society as a whole. (13) : The end of the World War II saw passage of the Servicemen’s Readjustment Act of 1944. The law, which provided for (14) for returning veterans, made an already democratic higher-education system accessible in ways that were (15) in Europe, opening the doors of the best universities to men and women who had (16) of going to college. (17) : The creation of federal loan guarantees and subsidy programs, as well as outright grants for college students brought (18) to higher education and further helped to democratize access. Since its founding (19) , the Federal Family Education Loan Program has funded more than 74 million student loans worth more than (20) .