求未知数x. ①23x+12x-23=0.5②8:x=13:14.

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问题:

求未知数x.
2
3
x+
1
2
x-
2
3
=0.5
②8:x=
1
3
1
4
考点:解方程解比例,比例的应用题
题型:解答题

Glacier National Park in Montana shares boundaries with Canada, an American Indian reservation, and a national forest. Along the North Fork of the Flathead River, the park also borders about 17,000 acres of private lands that are currently used for ranching, timber, and agriculture. This land is an important part of the habitat and migratory routes for several endangered species that frequent the park. These private lands are essentially the only ones available for development in the region.

With encouragement from the park, local landowners initiated a landuse planning effort to guide the future of the North Fork. The park is a partner in an interlocal agreement that calls for resourcemanaging agencies to work together and with the more than 400 private owners in the area. A draft plan has been prepared, with objective of maintaining traditional economic uses but limiting new development that would damage park resources. Voluntary action by landowners, in cooperation with the park and the county, is helping to restrict smalllot subdivisions, maintain wildlife corridors, and minimize any harmful impact on the environment.

The willingness of local landowners to participate in this protection effort may have been stimulated by concerns that congress would impose a legislative solution. Nevertheless, many local residents want to retain the existing character of the area. Meetings between park officials and landowners have led to a dramatically improved understanding of all concerns.

73. The passage mainly discusses ______.

A. the endangered species in Glacier National Park

B. the protection of lands surrounding Glacier National Park

C. conservation laws imposed by the state of Montana

D. conservation laws imposed by Congress 

74. Why are the private lands surrounding Glacier National Park so important?

A. They function as a hunting preserve.B. They are restricted to government use.

C. They are heavily populated. 

D. They contain natural habitats of threatened species. 

75. The relationship between park officials and neighboring landowners may best be    described as ______.

A. indifferent                      B. intimate C. cooperative               D. disappointing

76. It can be inferred from the passage that a major interest of the officials of Glacier     National Park is to ______.

A. limit land development around the park       B. establish a new park in Montana

C. influence national legislation           D. settle border disputes with Canada 

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有关肝脂肪变性的描述,不正确的是()

A.肝硬化脂肪变性与单纯脂肪沉积的病理基础相同

B.肝脏的CT值低于脾脏即可诊断脂肪肝

C.CT平扫肝实质密度下降,肝内血管影显示不清或不能显示

D.增强特征与正常肝脏一致,但仍低于增强后的脾脏

E.肝内血管有时受挤压变细,但无推移包绕现象

题型:解答题

在教学设计中,学习内容的分析方法有四种,以下属于四种分析方法的有()

A.归纳分析法

B.图解分析法

C.层级分析法

D.信息加工分析法

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110(66)kV-220kV变压器出厂验收时,测量铁芯对夹件及地、夹件对地的绝缘电阻,测量应使用2500V绝缘电阻表,允许的最小绝缘电阻是()MΩ。

A.1000

B.2000

C.3000

D.4000

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