试述贴面牙体预备方法。

题型:问答题

问题:

试述贴面牙体预备方法。

考点:山东住院医师口腔整形科Ⅱ阶段专业理论专业理论题库
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Three—quarters of a million tourists flock to the white beaches every year,but this booming industry has come at a price.Poisonous smoke rising from open fires,rubbish made up of plastic bottles,packets…it’S a far cry from the white sands,clear waters and palm trees that we associate with the Maldives(马尔代夫),the paradise island holiday destination set in the Indian Ocean.

of its 200 inhabited islands,which are spread across an area of"35,000 square miles,99 are good resorts(旅游胜地).So many tourists come every year,more than double the local population.Of these,over l 00,000 travel from the U K.The capital,Mal6,is four times more densely populated than London.Given these facts,it’S hardly surprising that the Maldives has a waste disposal problem.

Y ears a90,when the tourists left,the government had to deal with a stream of rubbish.Their solution was to turn one of the islands into a dumping ground.Four miles west of Mal6 is the country’s dumping ground,Thilafushi.What you are seeing here is a view of the Maldives on which no honeymooners will ever clap eyes.Each visitor produces 3.5 kg of waste per day.The country dumps more than 330 tons of rubbish on the island every day.

Now,since many waste boats,fed up with waiting seven hours or more,directly offload their goods into the sea,the government of the Maldives has banned the dumping of waste on the island.S0,the waste boats ship the rubbish to India instead.

小题1:What is the main cause of the waste disposal problem?

A.The big local population.

B.Too many waste boats.

C.The large number of tourists.

D.Open fires on the islands.小题2:The underlined part can probably be replaced by“——”.

A.it’s quite similar to

B.it’S a long distance from

C.it’s a loud shout from

D.it’S totally different from小题3:What can we learn from the text?

A.It iS much more crowded in Mal6 than in London.

B.Another island will be used as a dumping ground.

C.No honeymooners are willing to visit the Maldives.

D.Waste on islands will be offloaded directly into the sea.小题4:What’S the author’S purpose in writing the text?

A.To attract more tourists to the Maldives.

B.To state the waste disposal problem in the Maldives.

C.To call on us to protect the environment.

D.To explain the causes of pollution in the Maldives.

题型:问答题

在周代分封制下,墓葬有严格的等级规定。考古显示,战国时期,秦国地区君王墓葬规模宏大,其余墓葬无明显等级差别;在经济发达的东方六国地区,君王、卿大夫、士的墓葬等级差别明显。这表明( )

A.经济发展是分封制度得以维系的关键

B.分封制中的等级规定凸显了君主集权

C.秦国率先消除分封体制走向集权统治

D.东方六国仍严格遵循西周的分封制度

题型:问答题

关于纯母乳喂养的定义是()

A.除母乳外,还给婴儿吃维生素、果汁,但每日不超过1~2口

B.除母乳外,不给婴儿吃其他任何液体或固体食物

C.指母乳占全部婴儿食物的80%及以上的喂养

D.除母乳外,只给婴儿喝点水

E.指母乳占全部婴儿食物的90%及以上的喂养

题型:问答题

要用标尺设置制表位,正确的视图编辑方式是()。

A.大纲视图

B.主控文档视图

C.Web版式视图

D.页面视图

题型:问答题

什么情况下所有的红色起落架指示灯都会熄灭()

A.起落架手柄在收上位时,起落架已经收上并锁定

B.起落架手柄在中立位时,起落架已经收上并锁定

C.起落架手柄在放下位时,起落架已经放下并锁定

D.以上都对

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