PLC的日常维护与维修,应该包括(),以保证其工作环境的整洁和卫生。A、用干抺布和皮

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问题:

PLC的日常维护与维修,应该包括(),以保证其工作环境的整洁和卫生。

A、用干抺布和皮老虎清灰

B、日常清洁与巡查

C、用干抺布和机油

D、用干抺布和清水

E、接口是否松动

考点:高级维修电工高级维修电工题库
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阅读短文,根据文章大意及所给单词首字母提示完成填空。

     One day two young men went to the forest. On the way, one said t _____ the other.  "We're g _____ 

 friends. We must help each o _____ ." "A11 right ! "the other one answered. After a short t _____ , there

  was a great noise. It was a big bear. The two men ran a _____ quickly. One of them got up into a tree.

 The other was fat and couldn't c _____ up. He threw himself at the foot of the tree. The bear came near.

 It looked at the fat man, put i _____ nose down and smelt him. It thought the young man was dead, so it 

 walked away. The man in the tree came down. He asked his friend, "The bear put its mouth so near to

 your ear. W_____ did it say to you?" The fat young man answered, "the bear said, "A friend in need is a

 friend indeed. "

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静电火花是引起()的原因之一。

A、着火

B、超温超压

C、着火和爆炸

D、泄漏

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服装厂计划一个月生产衬衣5000件,结果上半月完成
3
5
,如果下半月完成的与上半月同样多,这个月实际生产多少件?
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请仿照画线的句子,另写两句话,要求语意连贯,句式一致。(4分)

人生就像一条河流,快乐和悲伤是河流的两岸;人生犹如一幅画卷,冷色和暖色的交织才成就画的璀璨夺目      ,               ,       。痛苦并快乐着的人生,才是真正的人生,也就是真正意义上的完美人生。

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具有促进乳腺发育及泌乳功能的激素除外

A.雌激素
B.雄激素
C.孕激素
D.垂体生乳素
E.皮质醇

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