在使用了仪表()阀组后,在仪表导压管上不需要再安装排污阀。A、4 B、5 C、3 D

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问题:

在使用了仪表()阀组后,在仪表导压管上不需要再安装排污阀。

A、4

B、5

C、3

D、6

考点:液化天然气操作工机械设备维护保养机械设备维护保养题库
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When you have a cold, you must be unhappy (不快乐) because your body becomes hot, and there are pains (疼痛) all over. You don’t want to work, you stay in bed, feeling terrible.

What makes you ill? It’s germs. Germs are everywhere. They are very small and you can’t find them with your eyes but you can see them with a microscope (显微镜). They are very small and there could be hundreds of them in or on a very small thing.

Germs are always found in dirty water. When you look at dirty water under the microscope, you can see them in it.

Germs are found not only in water. They are also found in air and dust (灰尘). If you cut your finger (手指), and if some of the dust goes into the finger, it will become big and red, and you will have much pain in it. Sometimes germs will go into your body and you will have pain everywhere.

小题1:The word “germ” means (意思是)___________.

A.细菌

B.废气

C.煤气

D.空气小题2:You can see germs____________.

A.when you are ill

B.only when you use a microscope

C.when you cut your finger

D.everywhere around you小题3:Your parents won’t allow(允许) you to drink dirty water because_________.

A.dirty water will make you dirty

B.there are many germs in it and germs can make you ill

C.you can see many germs in it

D.it will make your finger red and big小题4:The writer(作者) talks about__________.

A.how to keep dirty water clean

B.how to look after your fingers

C.how to find germs in the dirty water

D.what can make you ill

题型:单项选择题

CSF蛋白电泳呈现前清蛋白含量下降时,见于()

A.脑积水

B.脑内炎性疾病

C.脑外伤

D.脑萎缩

E.中枢神经系统退行性变

题型:单项选择题

A、B、C为短周期元素,在周期表中所处的位置如图所示,A、C两元素的原子核外电子数之和等于B原子的质子数,B原子核内质子数和中子数相等。  

 

(1)写出A、B、C三种元素的名称        、       、     

(2)B元素位于元素周期表中第      周期,第       族。

(3)C的原子结构示意图为             ,用电子式表示C的单质与H2反应的过程:                                     。

(4)由元素A、C及氢元素形成的化合物中含有的化学键的类型有                   。

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Z86150型射芯机的射芯能力()2ZZ8640A型射芯机。

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在造粒系统开车时,要先启动切粒机而后启动熔融泵。

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