理想变压器原线圈接在如图所示的电压上,原副线圈匝数之比为10:1,串在原线圈上的

题型:多选题

问题:

理想变压器原线圈接在如图所示的电压上,原副线圈匝数之比为10:1,串在原线圈上的电流表的示数为1A,则以下叙述正确的是(  )

A.变压器输出功率为200W

B.若n1=100匝,则输出端线圈的磁通量变化率的最大值为2Wb/s

C.副线圈两端的电压表示数20V

D.变压器的输入功率是由发电厂的输出功率决定的

考点:变压器的结构和原理
题型:多选题

Part 4


Questions 26-45


·Read the following passage and decide which answer best fits each space.
·For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.
Participation (26) high school sports is not a constitutional right. (27) , it is a privilege, paid for by taxpayers, open to students who promise to (28) certain conduct requirements on and off the field. One of these promises is to (29) from using drugs. Drug use is a serious problem among high school students. Studies show that as many as 500, 000 high school students use muscle-pumping, life-destroying substances such as steroids. Many more use illegal drugs, (30) cause discipline problems and (31) the stage for lifelong (32) .
Drug testing works to (33) and identify use. That is why drug testing is required to compete in the Olympics, the National Collegiate Athletic Association and the National Football League. (34) drug testing was instituted by these organizations, use of performance- (35) drugs has been greatly reduced. We should want (36) in schools.
Indeed, many athletes (37) testing programs, and no wonder. Without testing, athletes have to choose between drug use and a competitive disadvantage (38) the field.
Those who challenge the need for drug testing may be forgetting (39) it is like be an adolescent. Peer pressure is enormous, and one of the few effective counter-weights is the fear of being caught. More importantly, once drug use is (40) , a school can (41) to the student before he or she gets addicted or arrested.
For 25 years, public schools (42) by federal judges and civil libertarians, with results everyone can see. It is time (43) decisions on how to run public schools locally (44) officials. There is nothing unconstitutional about asking those who gain the advantages of school-sponsored athletics to contribute to the safety of other players, the integrity of the game and their own well-being. The Supreme Court should leave these programs (45) .

A.Since

B.After

C.When

D.While

题型:多选题

“改革是发展的动力.是强国之路”,古今中外的改革有成功也有失败,有借

鉴更是动力,推动社会的发展和进步。下面是编辑中的“历史上重大改革回眸’’资料卡片。请参照范例,补充完成相关内容。

    事项

情景提示

改革人物改革性质政治方面积极意义
奖励耕织 

(1分)

是一次比较彻底的地主阶级的改革(1)推动了秦国社会的进步壮大             了国力,为辜国的富国强兵和后来 统一全国奠定了基础,对秦国以至中国历史的发展都起到了重要作用。(2)打击并瓦壤了旧的血缘宗法制度,使封建国家机器的职能更加健全,  制度的建设从此开始   (1分)                                
他十分祟拜章破仓,他建立的新式军队都是按照拿破仑军队的模式建立的,他还聘请当时拿破仑手下的军官担任自己的军事顾问 

穆罕默德· 阿里   

(2分)                        

(3分)

二一九法令(1分)(2分)(1)推动俄国社会的发展是一次              历史的进步.

(2)改变了俄国的社会性质,是俄                  国历史上一个重要转折点.

“公车上书”列举两人(2分)(2分)(1)                        (2分)

(2) 是资产阶级变革社会制度的初步尝试。试图在政治上变封建君主专制为资产阶级君主立宪制,为民族资本主义的发展创造有利条件.符台历史发展的趋势。

 

题型:多选题

黄金箱余额查询:柜员输入()黄金箱标识选择黄金箱,提交交易系统处理,成功后显示该柜员黄金箱内指定企业,品种,规格的黄金箱存数量。

A.企业代码

B.品种代码

C.规格代码

D.破损标记

题型:多选题

以事物的形态为扩散点,设想出利用某种形态的各种可能性,这种思维训练法称( )

A.形态扩散法
B.头脑风暴法
C.启发法
D.用途扩散法

题型:多选题

胎盘药物转运的主要方式包括()

A.被动转运、主动转运和特殊转运

B.被动转运、主动转运和自由转运

C.被动转运、主动转运和扩散转运

D.被动转运、主动转运和血流转运

E.被动转运、主动转运和梯度转运

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