移动抽排泵遇停电或其它紧急情况停止运转时,泵站司机应做()等工作。A、迅速将所有的放

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问题:

移动抽排泵遇停电或其它紧急情况停止运转时,泵站司机应做()等工作。

A、迅速将所有的放空阀门和配风阀门打开

B、将进气阀门关闭

C、将抽放泵开关关闭

D、立即向矿调度汇报

考点:龙煤集团班组长考试龙煤集团瓦斯抽放班组长考试龙煤集团瓦斯抽放班组长考试题库
题型:多项选择题

     What could be simpler than shaking fruit from a tree? Well, the job is a lot more difficult than you

might think. There is a right way and a wrong way to shake a fruit tree. And a person who is a good

apple tree shaker may not be a good cherry tree shaker. Different fruits take different shakes .

     As a rule, a slow hard shake is best. This makes the fruit fall much faster than a light; quick jiggle.

Most fruits have a set number of shakes per minute that will do the best job of getting them out of the

tree and onto the ground. To shake down plums, try shaking the tree four hundred times per minute,

moving the tree two inches at each shake. Experts say you'll get three times more fruit from the tree than

you will if you shake eleven hundred times per minute at one inch per shake. Cherries, because they are

smaller, need more shaking. A good rate of shaking seems to be about twelve hundred shakes per minute. Apples, like plums, need four hundred shakes.

     Of course, some people may choose to take no notice of all these expert directions for shaking fruit.

Keeping track of all the numbers can be enough to drive some people up a tree.

1. This passage is about ______.

A. eating plums                      

B. how to shake fruit from a tree

C. the value of fruits and vegetables      

D. ways in which people shake

2. A smaller fruit tree normally requires ______.

A. more people        

B. less shaking

C. two people per tree    

D. more shaking

3. The writer ends this story with ______.

A. a serious thought  

B. a suggestion for other ways to get fruit from trees

C. a joke            

D. a warning

题型:多项选择题

单程转化率和总转化率的关系是()

A.单程转化率=总转化率

B.单程转化率>总转化率

C.单程转化率<总转化率

D.不确定

题型:多项选择题

军事高技术的六大领域是什么?

题型:多项选择题

国家电监会《并网发电厂辅助服务管理暂行办法》中,有偿辅助服务包括()。

A.自动发电控制(AGC.

B.有偿调峰

C.备用

D.黑启动

题型:多项选择题

场地条件对建筑震害的影响主要因素是场地土的刚性(即坚硬或密实程度)大小和场地覆盖层厚度。

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