搜题请搜索小程序“爱下问搜题”
问题 填空题

有两个定值电阻R1＝4Ω和R2＝6Ω，串联后接到某电源上，那么两电阻两端的电压之比U1:U2=_____，电路的总电阻为_____Ω；如果将他们并联接入电路，则通过两个电阻中的电流之比I1：I2=___。

答案

2:3；10Ω；3:2

题目分析：在串联电路中，各处电流均相等，所以U1:U2= R1:R2=2:3，总电阻等于各部分电阻之和，所以总电阻是10Ω；如果将他们并联接入电路，并联电路各电支路电压均相等，则通过两个电阻中的电流之比I1：I2= R2:R1=3:2。

点评：解决本题的根据是熟知串并联电路电压、电阻特点。

填空题

Good afternoon, everybody. I’m pleased to be here with you, graduates of 2007. I’m a (1) , and students often approach me with (2) . You see, we are living in a society of great changes. With the presence of (3) , the process of getting a job in today’s world has changed for (4) .
Well, how can you use new technologies to help you First, let’s look at how you (5) . The traditional method of hunting for a job in the past required first, doing research on jobs that were (6) , typically by looking in newspapers, periodicals and magazines, as well as TV ads, and (7) . Then you decided where and for what post you were going to apply, put your resume (8) in a stamped envelope, and waited anxiously for someone to (9) .
Well, today, maybe the job search and (10) are very much the same, but the tools used are much more advanced, and they (11) . In fact, technology has not so much changed the process as enhanced it. The benefit, both for (12) , is that this makes the search more open to people of (13) from all over the world. But as more people are involved, it becomes (14) for the applicant than it ever was before.
The (15) for the working world today is learning these new and (16) and combining them with the older methods people have been using for years. For example, (17) , you can research employment not just in your city, but also in your state, your country, and (18) . You can copy information from a web page and paste it into a Microsoft Word document that’s easy to (19) . In many ways, it’s easier now: Just type your job application, click, and (20) ; it gets there in an instant.
查看答案
多项选择题

下列说法中，正确的有( )。

A．资产评估的要素是一个有机组成的整体，它们之间相互依托，相辅相成，缺一不可

B．企业单项资产价值之和等于企业整体价值之和，这里的单项资产不包含商誉

C．资产评估的最基本的功能评价和评值以及咨询和管理的功能

D．同一资产在公开市场假设、持续使用假设和清算假设下评估得到的价值类型分别是公开市场价值、持续使用价值和清算价值，其中清算价值肯定最低
查看答案