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[主观题]

The heating system has recently been______to make it more efficient.A．modifiedB．changedC．c

The heating system has recently been______to make it more efficient.

A．modified

B．changed

C．corrected

D．replaced

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发布时间：2021-10-19

更多“The heating system has recently been______to make it more efficient.A．modifiedB．changedC．c”相关的问题

第1题

The heating system of our apartment broke down so I made a ______ call to the community service center.

A.discussion

B.complaint

C.praise

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第2题

We don't need heating system, ______.A．and nor we can afford itB．we don't afford itC．nor c

We don't need heating system, ______.

A．and nor we can afford it

B．we don't afford it

C．nor can we afford it

D．nor can it afford

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第3题

In order to communicate thoughts and feelings, there must be a conventional system of sign

s or symbols which mean the same to the sender and the receiver.

The means of receiving communications are too numerous and varied for systematic classification; therefore, the analysis must begin with the means of receiving communication. Reception of communication is achieved by our senses. Sight, heating, and touch play the most important roles.

Example of visual communication are gesture and mini-cry. Although both frequently accompany speech, there are systems that rely solely on sight, such as those used by deaf and dumb persons. Another means of communicating visually is by signals of fire, smoke, flags or flashing lights. Feeling may be simply communicated by touch, such as handshaking , although a highly developed system of handshaking has enabled blind, deaf, and dumb persons to communicate intelligently. Whistling to someone, applauding in a theater, and other forms of communication by sound rely upon the ear as a receiver. The most fully developed form. of auditory communication is, of course, the spoken language.

The means of communication mentioned so far have two feature in common; they last only a short time, and the persons involved must be relatively close to each other. Therefore all are restricted in time and space.

The author explains that he will deal with reception of communication first because ______.

A．communication actually takes place when the message is received

B．there are more means of receiving than sending communications

C．reception of communications involved use of the senses

D．it is difficult to organize by type the means of sending communications

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第4题

The steady hum of school heating systems and air-conditioners can mean lower test scores f

or many young students, found a new study. The finding adds to growing evidence that classroom noises【C1】______ with learning. Plenty of studies have demonstrated the distracting【C2】______of noise in the classroom. In louder rooms, kids have more trouble hearing the teacher and become easily distracted,【C3】______when they are reading to themselves. Schools【C4】______ airports also report lower test scores than schools that are not affected by airplane noise. In one study, German students started scoring better on reading and vocabulary tests after a nearby airport【C5】______. Researchers were also interested in less【C6】______ sounds like the general buzz of basic mechanical systems. It was【C7】______that kids who spent all day in classrooms with such noises【C8】______ to score lower on standard reading comprehension tests. But math scores didnt【C9】______ with noise levels, possibly because teachers use more【C10】______ when theyre teaching math than when theyre teaching words. 【C11】______, lots of background noise sets kids up for problems. Studies have shown that kids make more noise in louder rooms.【C12】______by the scraping of chairs, the hum of the heating system,【C13】______the voices of other kids competing to be heard, some students【C14】______have a particularly hard time hearing【C15】______ the teacher is saying. And its not that theyre lazy or using noise as an【C16】______. Young brains have a much harder time【C17】______a signal from the background than mature, adult brains do. Along with【C18】______work, the new findings suggest the【C19】______ for enforcement of ANSIs standards. Despite an endless list of budgetary【C20】______, schools might have to put quiet at the top of their to-do lists.

【C1】

A．vibrate

B．interfere

C．increase

D．vanish

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第5题

DCS （DecentControl System) £££ 斜坡模式当下坡缓降功能被激活后,刹车系统将自动刹车并使车速降低到7km£¯h。地下车库，城市下坡路的福音，不需要踩刹车就能轻松驾驭。（)

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第6题

The class ()()() over, we had a ()()()discussion.

A.been ... heat