液化石油气罐身体,静电与避雷接地合用的接地电阻值应不大于()。 A.10Ω B.50

题型:单项选择题

问题:

液化石油气罐身体,静电与避雷接地合用的接地电阻值应不大于()。

A.10Ω

B.50Ω

C.100Ω

D.90Ω

考点:液化石油气罐区运行工液化石油气罐区运行工(初级)液化石油气罐区运行工(初级)题库
题型:单项选择题

下列有关安全边际表述正确的有()。

A.安全边际是正常销售额超过盈亏临界点销售额的差额

B.安全边际表明销售额下降多少企业仍不至亏损

C.安全边际部分的销售额也就是企业的利润

D.安全边际率大于1则表明企业经营安全

题型:单项选择题

阅读理解。

     In 1986, when Carlo Petrini first coined the term "Slow Food", he organized locally in his native Italy to

preserve the food and wine culture and protest fast food.

     Today, slow food has spread to 132 countries with over 85 000 members, addressing worldwide issues

like farmer equity and environmental stewardship-the actions people take to respect the rights of all living

things and all environments, to contribute to healthy and livable, communities.

     Characterized by Slow Food International as "good, clean, and fair food," slow food must enrich the eater's

life, have no negative impact on human or environmental health, and compensate fairly for food producers'

work. The average American meal travels about 1 500 miles to its final destination, with producing of food

traveling by plane from overseas and other items shipped across the country. However, cost for food travel

and heavy processing are not the only problems in the food industry that the environment faces. Industrial

agriculture also has unsustainable practices like inefficient water use and decreased biodiversity. Our ideas in

feeding ourselves are exceptional, but at various points our technologies come into conflict with nature's ways

of doing things. A great many of the health and environmental problems created by our food system owe to

our attempts to oversimplify nature's complexities, at both the growing and the eating ends of our food chain.

     "Slowing" food, by purchasing locally and sustainably, allows consumers to reduce the impact of "food

miles" and develop a closer relationship with their food producers. "We need to change our food system," said

David Prior, organizer of Slow Food Nation's Eat-In. "Our current food system is sick and we need to support

farmers and agriculture to ensure that everyone has the right to nutritious food."

1. The main idea of the passage can be summarized as _____.

A. why slow food is so important

B. the food and wine culture is rich in Italy

C. what you're eating always travels a long way

D. slow food makes the current food system sick

2. According to the second paragraph, environmental stewardship refers to _____.

A. measures of environmental protections

B. ways to establish healthy and livable communities

C. people's admiration for all the creatures on the earth

D. actions to protect the rights of all living things and environment

3. Slow food's characteristic doesn't lie in _____.

A. improving the quality of eater's life

B. providing a fair pay for food workers

C. being friendly to human and environmental health

D. developing a loose relationship with food producers

4. What is David Prior's attitude towards current food system? 

A. Suspicious

B. Unsatisfied

C. Indifferent

D. Supportive

题型:单项选择题

当出现析碳现象,但尚不严重可()。

A、适当提高水碳比,并尽可能提高系统压力和操作温度

B、适当提高水碳比,并尽可能降低系统压力和操作温度

C、适当降低水碳比,并尽可能提高系统压力和操作温度

D、适当降低水碳比,并尽可能降低系统压力和操作温度

题型:单项选择题

女,21岁,整理床铺后出现鼻痒、喷嚏,继而胸闷、呼吸困难、端坐位,两肺满布哮鸣音,最可能的诊断为

A.喘息性支气管炎

B.支气管哮喘

C.心源性哮喘

D.肺炎

E.肺气肿

题型:单项选择题

在医院发展中,有效反映医疗行业品格与特性的整体精神面貌就是()。

A、医院收入

B、医院精神

C、医务人员

D、医疗设备

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