一个圆柱体,侧面展开是一个正方形,它的边长是18.84厘米,圆柱的底面半径是__

题型:填空题

问题:

一个圆柱体,侧面展开是一个正方形,它的边长是18.84厘米,圆柱的底面半径是______.

考点:长方体和正方体的展开图
题型:填空题

During the 1980s, unemployment (失业人数) and underemployment (不充分就业) in some countries was so high as 90 per cent. Some countries did not 【B1】 enough food; basic needs in housing and clothing were not 【B2】 . Many of these countries looked 【B3】 the industrial processes of the developed nations for solution. 【B4】 , problems cannot always be solved by 【B5】 the industrialized nations. Industry in the developed nations is highly automated and very 【B6】 . It provides fewer jobs than labor-intensive industrial 【B7】 , and highly skilled workers are needed to 【B8】 and repair the equipment. These workers must be trained, 【B9】 many nations do not have the necessary training institutions. Thus, the 【B10】 of importing industry becomes higher. Students must be sent abroad to receive vocational and 【B11】 training. 【B12】 , just to begin training, the students must 【B13】 learn English, French, Germans, or Japanese. The students then spend many years abroad, and 【B14】 do not return home. All nations agree that science and technology should be shared. The point is: countries 【B15】 the industrial processes of the developed nations need to look carefully 【B16】 the costs, be cause ninny of these costs are 【B17】 Students from these nations should 【B18】 the problems of the industrialized countries closely. 【B19】 care, they will take home not the problems of science and technology, 【B20】 the benefits.

A.institutional

B.professional

C.universal

D.fundamental

题型:填空题
已知函数y=f(x-1)的图象关于点(1,0)对称,且当x∈(-∞,0)时,f(x)+xf′(x)<0成立(其中f′(x)是f(x)的导函数),若a=(30.3)•f(30.3),b=(logπ3)•f(logπ3),c=(log3
1
9
)•f(log3
1
9
)
,则a,b,c的大小关系是(  )
A.a>b>cB.c>b>aC.c>b>aD.a>c>b
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一患儿,男,6岁,排便时肛门脱出一肿物,淡红色,环形,便后可自行回纳,偶有点滴出血。

脱肛时直肠周围注射的作用机制是()

A.增加肛管直肠之间的角度以改变直肠脱垂状态

B.增加坐骨直肠间隙内脂肪充填以利托起直肠

C.增加肛门括约肌张力

D.使直肠周围组织张力增加

E.使直肠与周围组织粘连

题型:填空题

采用紫外线杀菌时,以波长为()的紫外线照射最好。

题型:填空题

下列关于临终关怀的内容哪项是正确的()

A.早期诊断,治疗原发病

B.缓解性的照护,减轻症状。帮助病人认识和面对死亡

C.家属是临终关怀的施与者,不是临终关怀的照护对象

D.临终关怀不是医疗保健服务项目

E.尽可能地挽救病人的生命

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