在价值工程活动中,常用于方案综合评价的定量方法包括()。 A.优缺点列举法 B.直接

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问题:

在价值工程活动中,常用于方案综合评价的定量方法包括()。

A.优缺点列举法

B.直接评分法

C.0-4评分法

D.环比评分法

E.比较价值评分法

考点:造价工程师工程造价管理基础理论与相关法规工程造价管理基础理论与相关法规
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献血者的献血不良反应有完整、准确记录,其中可以没有()

A.发生原因

B.症状

C.处理

D.跟踪回访

E.实验室化验结果

题型:多项选择题

Daniel Boone was born in the United States in 1734. He didn't go to school and couldn't read, although he learned all about the forests, streams and hunting. He could move silently like an Indian leaving no marks. He loved to live alone in the woods where nothing frightened him.

When he grew up, he married and tried to settle down on a farm. A year later, however, he wasn't satisfied and decided to go into the unknown western lands, crossing the Appalachian Mountains. When he returned after two years, he became famous for his long journey. He brought valuable animal skins and told stories about the Indians.

After this, he chose to keep travelling to unknown places. Once he lost to the Indians in battle and was taken away. The Indians liked him and became his friends.

Daniel Boone died at the age of 86. He is remembered as an explorer(探险者)and a pioneer who lived an exciting life in the early years of American nation.

小题1:Daniel Boone's early life was mainly spent in ______ .

A.learning about nature

B.hunting with his friends

C.learning useful skills from the Indians

D.studying at home because he couldn't go to school小题2:When he got married, Daniel Boone first planned to ______.

A.set up a large farm

B.go on a journey with his wife

C.find food, new land for his farm

D.live a peaceful life with his family小题3:Daniel Boone became famous because ______ .

A.he travelled a lot in the western lands

B.he was very good at telling stories

C.he found better animal skins than others

D.he was the first to climb the Appalachian Mountains小题4:Why did the Indians want to make friends with him?

A.Because they wanted to learn from him.

B.Because he wanted to make peace with them.

C.Because they wanted to make friends with white people.

D.No reason is told in this article.小题5:In this article, Daniel Boone is best described as ______ .

A.warm-hearted

B.strong

C.careful

D.brave

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如图所示为一磁流体发电机示意图,A、B是平行正对的金属板,等离子体(电离的气体,由自由电子和阳离子构成,整体呈电中性)从左侧进入,在t时间内有n个自由电子落在B板上,则关于R中的电流大小及方向判断正确的是(  )

A.I= ,从上向下

B.I= ,从上向下

C.I= ,从下向上

D.I= ,从下向上

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近年来,我国发生了多起瓦斯爆炸和煤井爆炸事件,造成了重大的人员伤亡和经济损失,引起了社会的重视.了解瓦斯爆炸和煤井爆炸的原理是非常重要的,瓦斯特指可燃性气体,主要成分是甲烷,甲烷具有可燃性,它与空气混合在其爆炸极限内,遇明火会引起爆炸.瓦斯爆炸和煤井爆炸的原理相似,但“罪魁祸首”却不一样,而且造成的危害也不一样,煤井爆炸由于煤井内缺氧,爆炸时产生一种有剧毒的气体,即使井下人员没被塌方的矿石压死,也会被毒死.请简单说明煤井爆炸的原理,这种毒气是什么气体?根据上述原理写出两种爆炸的化学方程式.

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什么叫电阻并联?

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