成人冠状缝正常宽度应为() A.小于1mm B.小于2mm C.小于3mm D.小于

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问题:

成人冠状缝正常宽度应为()

A.小于1mm

B.小于2mm

C.小于3mm

D.小于4mm

E.大于5mm

考点:专业理论神经系统及头颈部神经系统及头颈部题库
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波普尔的证伪主义认识论

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下列哪些是围术期并发血栓的机制()

A.血液粘滞度增加

B.血管壁的损伤和破坏

C.血管内溶血

D.血流减慢

E.血液粘度增加

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Australia is famous for its beautiful beaches. And Australian people love swimming and going to the beach. But it wasn't always that way.

Different Climate, Different habits

When Europeans first invaded Australia, the only people here who were good at swimming were the Aboriginal people. The Europeans came from climates where it was too cold to swim. Also some people worried that they would get sick if they wet their whole body.

However the warm climate of Australia soon changed their attitude to swimming. At first, only men swam. They swam naked - there were no women to see them.

Cover up!

By the 1880’s and 90’s visiting the beach was very fashionable and a lot of people went there, especially in warm weather. They wore everyday street clothes - much more than people wear at the beach today.

In those days, people believed they should cover most of their body so it would not be seen by the opposite sex. Special bathing costumes were designed for women. These costumes used a lot of cloth and were very heavy when wet, making it difficult to swim.

Laws Made and Laws Changed

The government decided to stop men swimming naked.It passed a law which forbade bathing between 6am and 7pm. Many people objected to this law and wrote letters to the government asking it to change the laws. In 1903, the laws changed; people could swim in the daytime, but they had to wear neck-to-knee costumes.

The Shrinking Costume

As time passed, swimming costumes became smaller and more convenient.

At first men and women were covered from neck to knee. Then the arms became bare. Then more of the legs were uncovered.Each new change was regarded by many as shocking and rude and people wrote letters to the newspapers complaining about the new costumes. Nowadays some people go to special "nude (裸体) beaches" to swim naked.

However, most people cover their bodies more than they did ten years ago -- not because they think bare skin is shocking -- but to protect their skin from the harmful rays of the sun.

小题1:The climate of Australia _____.

A.made European setters think differently about swimming

B.change European setters’ swimming costume

C.made European setters hotter

D.made European setters swim naked小题2: During the late 19th century, swimmers should _____.

A.hide when they see a person of the opposite sex

B.cover their bodies

C.wear many heavy clothes

D.take no notice of their clothes小题3: According to the law just before1903, people must _____.

A.not swim in the main daylight hours

B.only swim between 6am and 7pm

C.have a bath at 6am and 7pm

D.swim with neck-to-knee costumes between 6am and 7pm小题4:The last paragraph of the passage states that _____.

A.people worry about getting skin cancer from too much sun

B.people protect their ten-year-old sons from bare skin

C.people are shocked by the sun

D.people think it rude to swim with the smaller costumes

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类风湿性关节炎的血清补体变化情况是

A.疾病活动期补体水平下降,病情稳定期补体水平恢复正常
B.疾病活动期补体水平下降,病情稳定期补体水平升高
C.疾病活动期补体水平升高,病情稳定期补体水平恢复正常
D.疾病活动期补体水平升高,病情稳定期补体水平下降
E.整个疾病过程中,补体水平均下降

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按静置设备的设计压力分类,中压设备的压力范围是( )。

A.0.1MPa≤P<1.6MPa

B.1.6MPa<p≤10MPa

C.1.6MPa≤p<10MPa

D.10MPa<p≤100MPa

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