A、B是两条长度相同的镍铬合金丝,A的横截面积大于B的横截面积,则A的电阻___

题型:填空题

问题:

A、B是两条长度相同的镍铬合金丝,A的横截面积大于B的横截面积,则A的电阻______B的电阻,(填“大于,小于或等于,下同);若将它们串联后接入电路,A端的电压______B端的电压;若将它们并联后接入电路,通过A的电流______通过B的电流.

考点:影响电阻大小的因素
题型:填空题

第二节:完形填空(共20小题:每小题1.5分,满分30分)

阅读下面短文,从短文后各题所给的四个选项(A, B, C, D) 中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

Hundreds of people, adults and children, come and go every day from the Kingsley School in Evanston, and police say that right now none of them has been eliminated(排除) as a(n)  21  suspect.  22 ,police have the weapon and detectives are trying to find out to whom it last  23 .

Investigators say that  24  Tuesday morning a few minutes before lunch a second grader found the weapon in a toilet in a first floor laboratory. It is a five-shot, 38 caliber(口径) revolver that was fully loaded.  25  the 7-year-old girl reported her discovery immediately.

“We’ve taken  26  . We’ve called the police. It’s being  27  . And we are concerned,” said Evanston School’s spokesperson Jan Roy.

Wednesday school officials sent students home with a  28  addressed to their parents about the  29  .

“At this point I don’t have enough answers and I would really like to get  30 ,” said Emily Gregrich, one of the parents.

31  parents who waited for their kids Thursday afternoon still had not  32  about the gun.

The principal conducted two assemblies(集会) to put to rest rumors  33  the 475 children who  34  the school. For  35 , the police investigation is focused on interviewing adults, teachers and nonprofessional staff members who were in the building the 24-hour period  36  the weapon was found.

“Where they were, what was going on, did they see anybody, you know, anybody in the school, anything unusual  37  , and we hope to  38  information through those interviews,” said Dep. Chief Joe Bellino of the Evanston Police Department.

Thursday afternoon the school district announced  39  to improve its efforts to communicate with  40  . It will make a phone tree Thursday night, and we are told the principal has invited parents who need more information about this to meet him here at the school Friday morning.

21.A.possible    B.unknown  C.strange     D.unusual

22.A.However  B.Later C.Meanwhile       D.Still

23.A.given       B.offered     C.devoted    D.belonged

24.A.after  B.before      C.early D.late

25.A.Suddenly  B.Fortunately      C.Quickly    D.Soon

26.A.advice      B.measures   C.notice       D.notes

27.A.investigated     B.discussed  C.questioned       D.removed

28.A.book B.speech      C.letter D.record

29.A.incident    B.accident    C.discovery  D.gun

30.A.angry       B.shocked    C.less   D.more

31.A.Some       B.Many       C.Any  D.Other

32.A.heard       B.read       C.talked    D.told

33.A.in   B.among   C.between        D.within

34.A.attend    B.love       C.escape    D.protect

35.A.all  B.certain   C.now       D.example

36.A.when     B.while     C.before   D.after

37.A.goes on  B.went on  C.were going on      D.going on

38.A.search    B.develop  C.prove     D.check

39.A.news      B.plans      C.instructions    D.introductions

40.A.parents   B.teachers   C.adults     D.Students

题型:填空题

下列关于印度居民的叙述,正确的是(  )

A.印度人口的增长近年来越来越快

B.印度是个多民族、多宗教的国家

C.印度虽然人口众多,但资源丰富,经济发展所受压力并不大

D.由于“绿色革命”成果显著,印度粮食人均占有量已接近世界人均水平

题型:填空题

关于类风湿关节炎的描述,下列哪项不正确( )

A.是一种非特异性炎症
B.其发生与免疫机制和HLA-DB4抗原有关
C.临床表现多为多发性和对称性关节炎
D.病程发展缓慢但有急性发作,逐渐形成关节畸形
E.与风湿性关节炎属同一疾病,只是好发年龄不同

题型:填空题

下面选项中不属于面向对象程序设计特征的是【 】

A.继承性

B.多态性

C.类比性

D.封装性

题型:填空题

采用钢筋混凝土灌注桩时,开挖标准是桩身混凝土达到()。

A、设计强度后

B、混凝土灌注

C、混凝土灌注24h

D、混凝土凝固后

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