表示生产运行情况是否正常而需加以调节的物理量叫(),()所具有的数值叫给定值。

题型:填空题

问题:

表示生产运行情况是否正常而需加以调节的物理量叫(),()所具有的数值叫给定值。

考点:火电厂热工考试火电厂热工考试题库
题型:填空题

左上6牙合支托的宽度应是 ()

A.左上6牙合面颊舌径的1/2

B.左上6牙合面颊舌径的1/3

C.左上6牙合面近远中径的1/4

D.左上6牙合面近远中径的1/2

E.左上6牙合面颊舌径的1/4

题型:填空题

阅读理解。

     It was Molly's job to hand her father his brown paper lunch bag each morning before he headed off to

work.

     One morning, in addition to his usual lunch bag, Molly handed him a second paper bag. This one was

worn and held together with staples (书钉).

     "Why two bags?" Her father asked. "The other is something else," Molly answered.

     "What's in it?" "Just some stuff (东西). Take it with you."

     Not wanting to discuss the matter, he put both sacks into his briefcase, kissed Molly and rushed off.

At midday he opened Molly's bag and took out the contents: two hair ribbons, three small stones, a plastic

dinosaur, a tiny sea shell, a small doll, and 13 pennies…The busy father smiled, finished eating, and swept

the desk clean into the wastebasket, Molly's stuff included.

     That evening, Molly ran up behind him as he read the paper. "Where's my bag?" "What bag?" "The one I

gave you this morning." "I left it at the office. Why?" "I forgot to put this note in it," she said. "And, besides,

Daddy, the things in the sack are the things I really like. I thought you might like to play with them. You didn't

lose the bag, did you, Daddy?" "Oh, no," he said, lying. "I just forgot to bring it home. I'll bring it tomorrow."

While Molly hugged her father's neck, he unfolded the note that read:"I love you, Daddy." Molly had given him

her treasures-all that a 7-year-old held dear.

     Love in a paper bag, and he missed it-not only missed it, but had thrown it in the wastebasket. So back he

went to the office. Just ahead of the night Janitor (看门人), he picked up the bag from the wastebasket. He

put the treasure inside and carried it home carefully. The bag didn't look so good, but the stuff was all there

and that's what counted.

     After dinner, he asked Molly to tell him about the stuff in the sack. It took a long time to tell. Everything

had a story or a memory.

     "Sometimes I think of all the great times in this sweet life," he thought.

     We should all remember that it's not the destination that counts in life, but the journey. That journey with

the people we love is all that really matters. It is such a simple truth but it is so easily forgotten.

1. Why did Molly give her father a second bag? [ ]

A. She didn't want to keep the things in the bag.

B. She hoped those things would bring happiness to her father.

C. She wanted to remind her father of the stories behind the things.

D. She enjoyed playing with her father.

2. How did Father deal with the bag after he opened it? [ ]

A. He kept it in the drawer.

B. He took it back home.

C. He threw it into the wastebasket.

D. He put it on his table.

3. After Father heard what his daughter said, he felt _____. [ ]

A. regretful

B. surprised

C. sad

D. satisfied

4. Which of the following is the most suitable title of the passage? [ ]

A. An Important Journey

B. Two Bags

C. Father and Daughter

D. Love in a Paper Bag

题型:填空题

2 kg 温度为15℃的水与1 kg 温度为90℃的水在绝热容器中混合,若环境温度为280 K,试求:

此混合过程作功能力的损失Ι(水的比热容c=4.186 kJ/(kgK))。

题型:填空题

(四) 综合安全技术


在起重机的基本参数中,( )是起重吊钩中心到塔式起重机回转中心线之间的水平距离(m),它是以建筑物尺寸和施工工艺的要求而确定的。

A.轨距

B.工作幅度

C.起重力距

D.起升高度

题型:填空题

断层的上盘相对上升,下盘相对下降,这样的断层是().

A.逆断层;

B.正断层;

C.平移断层.

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