下列关于固定式喷灌系统的叙述错误的为()。A、泵房固定,阀门、管道下地 B、喷头必须

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问题:

下列关于固定式喷灌系统的叙述错误的为()。

A、泵房固定,阀门、管道下地

B、喷头必须固定

C、设备费用高

D、节省人工、水量

考点:林学园林工程施工与管理园林工程施工与管理题库
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为了发展我国的民族工业,侯德榜先生于1921年毅然回国。他全身心地扑在制碱工艺和设备的改进上,终于摸索出了索尔维法的各项生产技术。1924年8月,塘沽碱厂正式投产。 1926年,中国生产的红三角牌纯碱在美国费城的万国博览会上获得金质奖章。下列物质的俗名与化学式相符的是 [ ]

A.纯碱(NaOH)

B.胆矾(CuSO4)

C.小苏打(Na2CO3)

D.苏打(Na2CO3)

题型:单项选择题
阅读下面短文,根据所读内容在表格中的空白处填入恰当的单词。
注意:每个空格只填一个单词。
For years, researchers have looked into a possible relationship between heat and violence. There are conflicting results over whether there is an actual connection between rising anger and rising temperature, but the murder rate constantly increases during the months of July and August, according to the FBI’s annual crime report.
Many police chiefs say they put more policemen on the streets when the heat rises. “Calls for service always increase from May, June, July and August,” said New Bedford’s Captain Richard Spiriet. “The longer period of time you have the heat, the worse it is. It’s just the opposite in the winter time.”
Craig Anderson, a professor and specialist in social psychology at Lowa State University, argues the evidence is clear. “As the temperature goes up, people become more uncomfortable. They become easier to get angry,” he said. “That increases the possibility that a small conflict will be interpreted as more major.” Anderson conducted a couple of studies looking at crime rates over the course of several years within the same area to see when most violent crimes occurred. He found that violent crimes were more likely to occur on hot days and hot months - even hot years had higher violent rates than cold years, according to his research.
Other research shows it is not so much the physical climate, but rather the social climate, that causes increased violence. “During the summer months, people stay up later. They talk with their neighbors. They party with their friends,” said Jack Levin, director of the Brudnick Centre on Violence at Northeastern University. “There are more likely to be large numbers of people interacting, and they are more likely to argue.”
Perhaps the realization that there is a link will help people in an argument step back and say, “Let’s cool off” - both literally (字面上地) and figuratively (比喻地).
Title
Heat and Violence
Theme
Violence possibly has a 小题1:___________ with heat.
Facts
☆July and August witness the小题2:____________ increase of murder rate.
☆More policemen are called in with the heat小题3:___________.
☆People get angry more小题4:___________ as the temperature goes up.
小题5:_________ of the research
☆Fewer violent crimes occur on 小题6:___________ days.
☆The小题7:___________ climate causes increased violence.
☆People usually go to小题8:___________ later during the summer months.
☆There are more likely to be小题9:____________ when people chat with each other.
Conclusion
小题10:__________the link will help people in an argument cool off.
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一堆煤用去25吨,还剩下35吨,用去这堆煤的几分之几?剩下这堆煤的几分之几?

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《中华人民共和国公务员法》规定,公务员在下列( )情况下不予辞退。

A.正在接受审计、纪律审查

B.需要调整工作,本人拒绝合理安排

C.不履行公务员义务,不遵守公务员纪律,经教育仍无转变,不适合继续在机关工作

D.旷工或者因公外出、请假期满无正当理由在一年内累计超过30天

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为节省费用,现场四周的围挡设施可采用活动钢制围墙,安装牢固美观即可。

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