如图所示,消防管道直径D=200mm,末端收缩形喷嘴出口直径d=50mm,喷嘴和管道

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问题:

如图所示,消防管道直径D=200mm,末端收缩形喷嘴出口直径d=50mm,喷嘴和管道用法兰盘连接,并用螺栓固定。当流量Q=0.1m3/s时,螺栓所受的总拉力为()kN。

A.4.78

B.35.83

C.40.59

D.45.61

考点:注册土木工程师岩土工程基础知识注册岩土工程师(基础考试)上午试题
题型:单项选择题

根据生态因子的稳定性程度可把生态因子分为稳定因子和()。

A.气候因子

B.地形因子

C.外来因子

D.变动因子

题型:单项选择题

Creating the Logistics Vision Nowadays,most companies are familiar with the idea of "mission statement"as an expression of setting a vision for the business.The mission statement seeks to define the pur-pose of the business,its boundaries and its aspirations.It is now common for organizations to have such statement for the business as a whole and for key constituent components.What some companies have found is that there can be significant benefits to defining the lo-gistics vision of the firm. The purpose of the logistics vision statement is to give a clear indication which business intends to build a position of advantage through closer customer relationship.Such state-ment is never easy to construct.There is always the danger that they will publish the ener-getic and encouraging declaration that give everyone a warm feeling but provide no guideline for action. Ideally the logistics vision should be built around the simple issue of"How do we intend to use logistics and supply chain management to create value for our customers?"To realize this idea will necessitate a detailed understanding of how customer value is created and deliv-ered in the market in which the business competes.Value chain analysis will be a fundamen-tal element in this investigation as will the definition of the core competencies and capabilities of the organization.Asking the question"What activities dowe excel in?"and"What is it that differentiates us from our competitors?"is the starting point for creating the logistics vision statement. Earlier,it was suggested that the three words"Better,Faster,Cheaper"summarizes the ways in which logistics vision statement can provide value for customers.The criterion for good logistics vision statement is that it should provide the road map for how these three goals are to be achieved. Questions:

What does mission statement intend to do?()

A.To please management.

B.To define,summarize anda chieve a common goal.

C.To achieve higher market share and profitability.

D.To develop new market.

题型:单项选择题

《马关条约》中最能体现列强对华侵略进入新阶段的内容是( )。

A.赔款数额巨大

B.增开的通商口岸深入内地

C.开辟运输新航线

D.允许日本在通商口岸投资设厂

题型:单项选择题

胎儿体内无 _________ 血,均是 _________ 血;进入 _________ 的血液含氧量高且营养丰富,而注入 _________ 的血液含氧量及营养少。

题型:单项选择题

M5如果气闸闸板在预定时间内没有打开或关闭,预分配箱以及烟丝箱均为空,则导致()。

A.设备停机

B.出现警告

C.设备慢速运行

D.无影响

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