施工现场消防竖管的管径不应小于()。 A.DN50 B.DN80 C.DN100 D

题型:单项选择题

问题:

施工现场消防竖管的管径不应小于()。

A.DN50

B.DN80

C.DN100

D.DN150

考点:一级消防工程师消防安全技术实务综合练习消防安全技术实务综合练习题库
题型:单项选择题

A rich man was ill in hospital, and the doctor feared that his life was ending soon. He called together his three sons and gave them the challenge, ‘One of you will get all my money. To decide which of you can get the money, I am going to give each of you a dollar. Go today and buy something that can fill this room.”

In the evening, they all came back. Child number one went to his friend’s farm and bought two bales of hay (两捆干草) with the dollar. He brought the hay and threw it up into the air. But it couldn’t fill the room.

Child number two went to a shop and bought two pillows made with feathers(羽毛). He then opened them and threw the feathers all over the room. All the feathers settled down on the floor and the room was still not filled.

The third son took out a candle and said, “I bought a box of matches and a candle then I gave the rest to a charity.” He lit the candle and turned off the lights, and the room was filled.

“ Well done, my son. You will get all my money because you understand a very important lesson about life. You understand how to let your light shine. That is good.” said the father.

小题1:The rich man wanted to give all his money to one of his sons because _______.

A.he was dying

B.he was too old to work

C.he wanted to know which son was the cleverest

D.he want something special小题2:Child number two ________.

A.asked his father for help

B.bought nothing

C.gave the money to charity

D.got feathers in a shop小题3:From the passage we can know _______.

A.the third son is honest and friendly

B.the father is satisfied with the third son

C.child number one is the cleverest

D.candle is a good gift for family小题4:What’s the best title of the passage?

A.Let Your Light Shine

B.A Rich Man and His Three Sons

C.How to Get Money

D.The Cleverest Son

题型:单项选择题

某投资方案贴现率为15%时,净现值为—4.13,贴现率为12%时净现值为5.16,则该方案的内部报酬率为()。

A.12.85%

B.13.67%

C.14.69%

D.16.72%

题型:单项选择题

人口压力指数分为人口经济比较压力指数和人口资源比较压力指数,它们分别等于人口数量除以经济人口容量和人口数量除以资源人口容量。下图是我国省级行政区的综合人口压力指数示意图(2000年),读图并结合所学知识回答9~10题。

小题1:下列说法不正确的是

A.西北地区人口密度小,仍有人口扩容的能力

B.人口合理容量应该考虑该地区人口与经济、资源与环境之间是否协调

C.西部人口压力指数大的原因是矿产资源丰富

D.西气东输、西电东送等工程可以缓解东部地区人口压力指数小题2:结合图上信息,我国人口迁移的主要方向是

A.东部迁往西部

B.北部迁往南部

C.中西部迁往东部

D.东部、西部迁往中部

题型:单项选择题

关于高血压的流行病学调查,以下哪项因素未被确定与发病有关()

A.年龄

B.体重

C.钠盐

D.饮酒

E.吸烟

题型:单项选择题

表示输沙特征的指标通常有()等。

A.含沙量

B.输沙率

C.输沙量

D.输沙模数

E.输移比

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