温差过大时,下列那种管壳式换热器需要设置膨胀节()。A、浮头式 B、固定管板式 C、

题型:单项选择题

问题:

温差过大时,下列那种管壳式换热器需要设置膨胀节()。

A、浮头式

B、固定管板式

C、U形管式

D、填料函式

考点:化工总控工考试化工总控工高级化工总控工高级题库
题型:单项选择题

减少与抑制散射线的方法中,错误的是()

A.降低管电压

B.减小被照体-胶片距离

C.缩小照射野

D.使用后盖贴有金属膜的暗盒

E.窗口上安装多层遮线器

题型:单项选择题

Molly Jackson was a happy little girl. She lived with her parents. Her parents loved her very much. Every morning, Mrs. Jackson would get up early to make breakfast. She also made lunch for Mr. Jackson. Then it was Molly's job to put her father's lunch box into a lunch bag. And she would give the lunch bag to her father.

One day, Molly gave two lunch bags to her father. "Why do you give me two bags, Molly?" asked Mr. Jackson.

"There is something else in the other bag," Molly answered.

"What's in it?" Mr. Jackson kept asking. "I can't tell you now. Just open it after your lunch," said Molly.

Time passed quickly, it was lunch time. Mr. Jackson opened his lunch bag and started to eat. Then he saw the other bag from Molly. So he opened this special bag.

In this bag, Mr. Jackson found some toys. There were some small model cars and pictures in the bag. And Mr. Jackson found a note(便条) at the bottom(底部) of the bag. It wrote, "Dad, here are some of my toys. You can play them in your free time and have a rest. I love you, dad."

小题1:Who makes breakfast in Molly's family?

A.Molly.

B.Molly's father.

C.Molly's mother.

D.We don't know.小题2:When did Mr. Jackson open the other bag?

A.Before the lunch.

B.During the lunch.

C.After the lunch.

D.After the breakfast.小题3:We can't see                  in the other bag.

A.a note

B.model cars

C.pictures

D.books小题4:Molly put her toys in the bag because she wanted her father to                   .

A.sell them

B.play them

C.throw(扔) them away

D.mend them

题型:单项选择题

长期应用苯妥英钠的不良反应有()

A.共济失调

B.齿龈增生

C.血小板减少

D.巨幼红细胞性贫血

E.低钙血症

题型:单项选择题

结核菌素弱阳性反应是指()

A.皮试局部发红、无硬结

B.皮肤硬结直径小于5mm

C.皮肤硬结直径在5~9mm

D.皮肤硬结直径在10~15mm

E.皮肤硬结直径小于15mm

题型:单项选择题

根据《江苏移动安全细则》规定合同工期在一年以上的建设单位应当自合同签订之日起日内预付安全生产费用不得低于该费用总额的()

A.0.7

B.0.5

C.0.1

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