氧器滑压运行的优点与存在的问题?

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问题:

氧器滑压运行的优点与存在的问题?

考点:电厂热力试验考试电厂热力试验考试题库
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根据短文内容,选出能填入空白处的最佳选项。选项中有一项为多余选项。
     My name is Jessica and I live in New York with my family. I have one brother. My brother goes to
 work every day, but I don't. __1__ My parents work in my school. My mother is an art teacher and my
 father is a maths teacher. Sometimes, we have our lunch in the dining hall. But I don't like the food there,
 so we usually eat at home. My brother doesn't have lunch with us. __2__ My mother likes books. She
 often reads her novels in the evening. Sometimes, she watches TV or goes shopping with me on Sunday.
 __3__ He often finishes his work very late in the evening, so my mother always makes food for us. My
 father loves sports. He can play football, basketball and table tennis. __4__ He often plays table tennis
 with my brother on Sunday. My brother's favorite thing is music. He usually gives a CD to me for my
 birthday and I usually  send a box of chocolates to him.
A. His favorite sport is table tennis.
B. My father loves his work.
C. He always has lunch at work.
D. I am a student.
E. I love my family and we always have a good time.
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项目成功度评价中,如果项目大部分目标已经实现,相对成本而言,项目达到了预期的效益和影响,指的是成功度标准中的( )。

A.基本成功的

B.部分成功的

C.不成功的

D.完全成功的

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把重5N、密度为0.9×103kg/m3的实心物体投入水中、当物体静止时,物体处于______状态(填“漂浮“、“悬浮”或“沉在水底“),物体所受的浮力是______N.(水的密度为1.0×103kg/m3

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为了形成封闭的冻结圈,先要在井筒周围钻一定数量的冻结孔,冻结孔一般等距离地布置在与井筒同心的圆周上。冻结孔间距一般为()。

A.1.2~1.5m

B.1.2~1.8m

C.1.2~2.0m

D.1.5~2.0m

题型:问答题 简答题

"书肆"一词最早出现在()时期。

A.战国时期

B.秦代

C.西汉

D.晋代

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