太阳能电池的功率随光照强度升高而()。 A.增大 B.减小 C.无关 D.先增大后减

题型:单项选择题

问题:

太阳能电池的功率随光照强度升高而()。

A.增大

B.减小

C.无关

D.先增大后减小

考点:能源科学技术能源经济能源经济题库
题型:单项选择题

复发性口疮是一种有自限制的疾病,通常轻型复发性口疮患者病程为2~4天。

题型:单项选择题

某次会议,昨天参加会议的男代表比女代表多700人,今天男代表减少10%,女代表增加了5%,今天共1995人出席会议,那么昨天参加会议的有多少人( )

A.2000

B.1900

C.2100

D.2200

题型:单项选择题

填入下面空白的词语正确的一项是[ ]

        _____开一块雪,露出地面,用一枝短棒_____起一面大的竹筛,下面_____些秕谷,棒上____一条长绳,人远远地_____着,看鸟雀下来啄食,走到竹筛底下的时候,将绳子一____,便罩住了

A、吹 撑 放 扣 看 抽

B、扒 支 丢 扣 瞄 紧

C、扫 支 撒 系 牵 拉

D、扫 支 撒 拉 牵 系

题型:单项选择题

Michael Fish may soon be replaced as a weather forecaster by something truly fishier---the shark(鲨鱼).

Research by a British biology student suggests that sharks could be used to predict storms.

Lauren Smith, 24, is close to completing her study on shark’s ability to sense pressure.

If her studies prove the theory, scientists may be able to monitor the behaviour of sharks to predict bad weather.

Miss Smith had previously studied the behaviour of lemon sharks in the Bahamas.

She then used their close relatives, lesser spotted dogfish, for further research at Aberdeen University.

Her work---thought to be the first of its kind to test the pressure theory ---- resulted from the observation that juvenile blacktip sharks off Florida moved into deeper water ahead of a violent storm in 2001.

Miss Smith said: “I’ve always been crazy about traveling and diving and this led me to an interest in sharks.”

“I was delighted to have been able to research in the area for my degree. I know there’s so much more we need to understand ---- but it certainly opens the way to more research.”

It has been discovered that a shark senses pressure using hair cells in its balance system.

At the Bimini Shark Lab in the Bahamas, Miss Smith fixed hi-tech sensors to sharks to record pressure and temperature, while also tracking them using GPS (Global Positioning System) technology.

In Aberdeen, she was able to study the effects of tidal(潮汐的) and temperature changes on dogfish----none of which were harmed. She also used a special lab which can mimic(模拟) oceanic pressure changes caused by weather fronts.

She is due to complete her study and graduate later this year. She says she will be looking for a job which will give her the chance to enrich her experience of shark research.

小题1:The passage is most probably taken from _____.

A.a short-story collection

B.a popular science magazine

C.a research paper

D.a personal diary小题2:What do we learn from the first four paragraph of the passage?

A.Sharks may be used to predict bad weather.

B.Sharks’ behaviour can be controlled.

C.Michael Fish is not qualified for his job.

D.Lauren Smith will become a weather forecaster.小题3:Lauren Smith conducted her research by _______.

A.removing hair cells from a shark’s balance system

B.measuring the air pressure of weather fronts

C.recording sharks’ body temperature

D.monitoring sharks’ reaction to weather changes小题4:What is the passage mainly about?

A.A popular way of forecasting weather.

B.A new research effort in predicting storms.

C.Biologists’ interest in the secrets of sharks.

D.Lauren Smith’s devotion to scientific research.

题型:单项选择题

经国务院同意,对企业债券发行核准程序进行改革,将先核定规模(额度)、后核准发行两个环节,简化为直接核准发行一个环节。()

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