燃气管网巡检分四级管理的标准是什么?

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问题:

燃气管网巡检分四级管理的标准是什么?

考点:燃气输配应知应会燃气输配应知应会题库
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最常见、最重要的致炎因子是()。

A.物理性因子

B.化学性因子

C.机械性因子

D.生物性因子

E.免疫反应

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用海藻治疗瘿病的最早记载见于()

A.《山海经》

B.《千金方》

C.《晋书》

D.《金匮要略》

E.《肘后备急方》

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建设项目设计方进度控制的任务是()。

A.依据设计任务委托合同对设计工作进度的要求控制设计工作进度

B.依据施工任务委托合同对施工进度的要求控制施工进度

C.依据供货合同对供货的要求控制供货进度

D.控制整个项目实施阶段的进度

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Stress is with us all the time. It comes from mental or emotional activity as well as physical activity. It is unique and personal to each of us. So personal, in fact, that what may be relaxing to one person may be stressful to another. For example, if you’’re a busy executive who likes to keep occupied all of the time, "taking it easy" at the beach on a beautiful day may be extremely frustrating, nonproductive, and upsetting. You may be emotionally distressed from "doing nothing." Too much emotional stress can cause physical illnesses such as high blood pressure, ulcers, or even heart disease. Physical stress from work or exercise is not likely to cause such ailments. The truth is that physical exercise can help you to relax and to better handle your mental or emotional stress.

One method mentioned to help handle stress is________.

A.physical exercise

B.tranquilizers

C.drugs

D.taking it easy

题型:问答题 简答题

外伸梁支座反力影响线的特点是()。

A.一条直线

B.两条直线组成的折线

C.两条平行线

D.该支座竖标为1

E.其他支座竖标为零

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