调节系统的速度变动率一般采用δ=3.5%~6%,对承担基本负荷的机组,δ值应小些。(

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问题:

调节系统的速度变动率一般采用δ=3.5%~6%,对承担基本负荷的机组,δ值应小些。()

考点:汽轮机检修汽轮机调速系统检修工(中级)汽轮机调速系统检修工(中级)题库
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单位重量或单位体积的燃料所能代替的()称之为置换比。

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While Jennifer was at home taking an online exam for her business law class, a monitor(监控器)a few hundred miles away was watching her every move.

Using a web camera equipped in Jennifer’s Los Angeles apartment, the monitor in Phoenix tracked how frequently her eyes moved from the computer screen and listened for the secret sounds of a possible helper in the room. Her Internet access was locked - remotely - to prevent Internet searches , and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? Or was she slowing down?

In the battle against cheating, this is the cutting edge and a key to encourage honesty in the booming field of online education. The technology gives trust to the entire system, to the institution and to online education in general. Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid - that students haven’t just searched the Internet to get the right answers.

Although online classes have existed for more than a decade, the concern over cheating has become sharper in the last year with the growth of "open online courses." Private colleges, public universities and corporations are jumping into the online education field, spending millions of dollars to attract potential students, while also taking steps to help guarantee honesty at a distance.

Aside from the web cameras, a number of other high-tech methods are becoming increasingly popular. Among them are programs that check students’ identities using personal information, such as the telephone number they once used.

Other programs can produce unique exam by drawing on a large list of questions and can recognize possible cheaters by analyzing whether difficult test question are answered at the same speed as easy ones. As in many university classes, term papers are scanned against some large Internet data banks for cheating.

小题1:Why was Jennifer watched in an online exam?

A.To correct her typing mistakes.

B.To find her secrets in the room.

C.To prevent her from slowing down.

D.To keep her from dishonest behaviors.小题2:The underlined expression cutting edge in Paragraph 3 is closest in meaning to______.

A.advanced technique

B.sharpening tool

C.effective rule

D.dividing line小题3: For Internet universities, exams and diplomas will be valid if _____.

A.they can attract potential students

B.they can defeat academic cheating

C.they offer students online help

D.they offer many online courses小题4:Some programs can find out possible cheaters by _____.

A.checking the question answering speed

B.producing a large number of question

C.scanning the Internet test question

D.giving difficult test question小题5: Which of the following is the best title of this passage?

A.The Advantages of Online Exams

B.The High-tech Methods in Online Courses

C.The Fight against Cheating in Online Education

D.The War against the Booming of Online Education

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()在司空图和严羽理论的基础上提出“神韵说”,竭力提倡王维、孟浩然、韦应物、柳宗元一派的诗歌。()著《谈龙录》批评王士禛的神韵说。

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人格测验一般包括()、()、()三种。

题型:判断题

ZXA10 C220系统可配置两块A型交换控制板,这两块A型交换控制板工作在()模式。

A.单独工作

B.同时运行

C.1+1

D.1:01

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