电动阀执行机构由()提供动力。A、电动机 B、液压泵 C、风动机 D、人力

题型:单项选择题

问题:

电动阀执行机构由()提供动力。

A、电动机

B、液压泵

C、风动机

D、人力

考点:延迟焦化操作工考试中级延迟焦化操作工考试中级延迟焦化操作工考试题库
题型:单项选择题

任务型阅读。

      When you stay away from your home for a long time, you start to miss your good old bed, your

 good old parents. Believe it or not, you're feeling homesick (想家的). You can help yourself to feel

 less homesick. Here's how:

      ●   1    If you're going away from home, bring your favourite pajamas (睡衣). You can also bring

 some pictures of the people who you may miss. You can look at them any time you want.

      ●   2    The busier you are, the less time you'll have to feel homesick. Spend your free time on music,

 sports or books. Try to join in activities wherever you are.

      ●   3    You can make a plan for when you'll call your mum or dad. You can also keep in touch with

 family and friends by emails or text messages.

      ●   4    Sometimes, telling someone that you're feeling a little homesick will help you feel better.

 Maybe you can tell a friend that you feel homesick and the two of you can do something fun.

从A、B、C、D中选择正确的选项作为文章第2-5段的小标题,并填入第1-4四个空格中。

1. _____ 2. _____ 3. _____ 4. _____  

A. Keep yourself busy.

B. Tell someone your feelings.

C. Stay in touch.

D. Bring something familiar with you.

5. Which is the best title for the passage?

A. How to stay away from home

B. How to do something fun

C. How to feel less homesick

D. How to miss your home

题型:单项选择题

大出血后出现气短,心悸,冷汗淋漓,四肢厥冷,脉微欲绝,可诊为( )

A.气不摄血

B.气血两虚

C.气随血脱

D.气虚下陷

题型:单项选择题

尺寸既定的舵机工作油压大小主要取决于()。

A.安全阀整定值

B.转舵速度

C.转舵扭矩

D.管路阻力

题型:单项选择题

镇咳作用与外周神经末梢有关的是()

A.浙贝母

B.远志

C.满山红

D.紫菀

E.苦杏仁

题型:单项选择题

为什么要控制系统的PH值?

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