He _____ when the UFO arrived. A. was sl

题型:选择题

问题:

He _____ when the UFO arrived.         

A. was sleeping   B. were sleeping       C. has slept

考点:过去进行时一般现在时过去完成进行时
题型:选择题

担保物权不具有的法律特征是()。

A.价值权性

B.法定性

C.独立性

D.不可分性

题型:选择题

医院感染可发生于机体各部位,了解常见医院感染的流行病学,有助于医院感染的预防及控制。

关于医院血流感染,下列叙述错误的是()

A.病死率高,有些病死率>50%

B.病原体主要来源于皮肤常驻菌或暂居菌

C.定植于血管内导管的微生物可致血流感染,且出现肉眼可见的外部感染

D.导管相关性血流感染最主要的危险因素是插管持续时间、插管时的无菌操作和导管护理

E.某些病原体如多重耐药的凝固酶阴性葡萄球菌、假丝酵母菌导致的医院血流感染日益增加

题型:选择题

为了减少含硫煤燃烧对大气的污染,适宜在煤中加入的物质是(  )

A.泥土

B.沙子

C.生石灰

D.烧

题型:选择题

某房地产企业计划一季度在本公司K、M、N三个地区按4000元/m2、5000元/m2、6000元/m2的价格销售商品房2000m2、2500m2、3000m2,但季末检查的情况是K地区以3900元/m2的价格售出2300m2,M地区以4600元/m2的价格售出2200m2,N地区以6000元/m2的价格售出3300m2

在销售现场管理中,房号管理应遵循( )。

A.客户满意

B.诚意表示可视同成交

C.以客户办理定房手续作为销售房号的标准

D.发生交易后,应停止向客户推荐此房号

题型:选择题

Although there are many skillful Braille readers, thousands of other blind people find it difficult to learn that system. They are thereby shut (1) from the world of books and newspapers, having to (2) on friends to read aloud to them.

A young scientist named Raymond Kurzweil has now designed a computer which is a major (3) in providing aid to the (4) .His machine, Cyclops, has a camera that (5) any page, interprets the print into sounds, and then delivers them orally in a robot-like (6) through a speaker. By pressing the appropriate buttons (7) Cyclops’s keyboard, a blind person can "read" any (8) document in the English language.

This remarkable invention represents a tremendous (9) forward in the education of the handicapped. At present, Cyclops costs $ 50,000. (10) , Mr. Kurzweil and his associates are preparing a smaller (11) improved version that will sell (12) less than half that price. Within a few years, Kurzweil (13) the price range will be low enough for every school and library to (14) one. Michael Hingson, Director of the National Federation for the Blind, hopes that (15) will be able to buy home (16) of Cyclops for the price of a good television set.

Mr. Hingson’s organization purchased five machines and is now testing them in Maryland, Colorado, Iowa, California, and New York. Blind people have been (17) in those tests, making lots of (18) suggestions to the engineers who helped to produce Cyclops.

"This is the first time that blind people have ever done individual studies (19) a product was put on the market," Hingson said. "Most manufacturers believed that having the blind help the blind was like telling disabled people to teach other disabled people. In that (20) , the manufacturers have been the blind ones.

8()

A.visual

B.printed

C.virtual

D.spoken

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