表示空气距离饱和程度的物理量有()。 Ⅰ.湿度露点差;Ⅱ.相对湿度;Ⅲ.水汽压;Ⅳ.

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问题:

表示空气距离饱和程度的物理量有()。

Ⅰ.湿度露点差;Ⅱ.相对湿度;Ⅲ.水汽压;Ⅳ.饱和水汽压;Ⅴ.干湿球温差;Ⅵ.温度露点差。

A.Ⅰ~Ⅳ,Ⅵ

B.Ⅰ,Ⅴ,Ⅵ

C.Ⅱ,Ⅲ,Ⅴ,Ⅵ

D.Ⅱ,Ⅴ,Ⅵ

考点:海船船员考试航海气象与海洋学航海气象与海洋学题库
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1924年列宁逝世,家住莫斯科的小姑娘尼娜给在国外的父亲写信告诉此事,她在寄信人的地址栏上应写的国名是[ ]

A.沙皇俄国

B.苏维埃俄国

C.苏联

D.俄罗斯

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Scientists discovered 163 new species in Southeast Asia’s Greater Mekong region last year,but all are at risk of extinction due to climate change,the WWF said in a report released Friday.

The newly discovered creatures include a bird­eating frog with fangs (毒牙),a bird that would rather walk than fly and a gecko (壁虎) whose alien appearance inspired the report’s title of “Close Encounters”,the conservation group said.

The report was released ahead of major UN talks on climate change in Bangkok next week,which are being held before a make­or­break summit in Copenhagen this December.

“Some species will be able to adapt to climate change,and many will not,potentially resulting in massive extinction,” Stuart Chapman,director of the WWF Greater Mekong program,said in the report.“Rare and endangered species like those newly discovered are especially vulnerable (易受伤害的) because climate change will further shrink their already restricted habitats,” he said.

“The new discoveries in 2010 include 100 plants,28 fish,18 reptiles,14 amphibians,2 mammals and a bird,”the WWF report said.The area spans Cambodia,Laos,Myanmar,Thailand,Vietnam and China’s Yunnan Province.

“Among the new species is the bird­eating fanged frog,which remains hidden in a protected area of Thailand despite the fact that scientists are studying there for 40 years,” the report said.

The tiger­striped pit viper was discovered accidentally on an island off the coast of Vietnam when a scientist was looking  for a lizard and his son pointed out that his hand was on a rock right next to  the snake’s fangs.“We caught the snake and the gecko and they both proved to be new species,” researcher Lee Grismer of La Sierra University in California was quoted as saying in the report.The leopard gecko,found on another Vietnamese island,has the coloring of a leopard and bizarre orange,cat­like eyes and thin legs.

The Greater Mekong region has proved a rich area  for scientists.The WWF said in December 2010 that it had found 1,068 new species there between 1997 and 2009.

小题1:What is special about the newly discovered bird?

A.It usually walks.

B.It likes walking and flying.

C.It can eat other birds.

D.It can eat frogs.小题2:Stuart Chapman believes that________.

A.most of the newly discovered species can adapt to climate change

B.climate change can cause massive extinction of the newly discovered species

C.the newly discovered species are not so vulnerable to climate change

D.many species have already died out because of climate change小题3:When Lee Grismer discovered the tiger­striped pit viper,he probably felt________.

A.frightened

B.disappointed

C.excited

D.puzzled小题4:What does the passage mainly tell us?

A.The Greater Mekong region is a rich area for scientists.

B.Many rare species remain to be discovered in the Mekong region.

C.Scientists have discovered many new species in the Mekong region.

D.Climate change threatens Mekong new species.

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治疗气喘咳嗽,皮肤蒸热,日晡尤甚,舌红苔黄,脉细数者,最适宜的方剂是()

A.苇茎汤

B.止嗽散

C.泻白散

D.麻黄杏仁甘草石膏汤

E.小青龙汤

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电阻制动的特点是()。

题型:单项选择题

绘图题:请画出长方体(40×30×20)的三视图。

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