采煤机液压系统中设置了哪些保护?

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问题:

采煤机液压系统中设置了哪些保护?

考点:矿井机电维修工矿井机电维修工题库
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乙数是210,甲数是乙数的4倍,甲数是______.

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工程监理企业应当拥有足够数量的、管理经验丰富和应变能力较强的监理工程师骨干队伍,这是建设工程监理( )的表现。

A.服务性

B.科学性

C.独立性

D.公正性

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Our little boy came up to his mother in the kitchen one evening while she was fixing supper, and handed her a piece of paper that he had been writing on. After his morn dried her hands on an apron, she read it, and this is what it said:
For cutting the grass $ 5.00
For cleaning up my room this week $ 1.00
For going to the store for you $ 0.50
Baby-sitting my kid brother while you went shopping $ 0.25
Taking out the garbage $ 1.00
For getting a good report card $ 5.00
For cleaning up and raking the yard $ 2.00
Total owed : $ 14.75
Well, I’ll tell you, his mother looked at him standing there expectantly, and boy, could I see the memories flashing through her mind. So she picked up the pen, turned over the paper he’d written on, and this is what she wrote:
For the nine months I carried you while you were growing inside me, no charge.
For all the nights that I’ve sat up with you, doctored and prayed for you, no charge.
For all the trying times, and all the tears that you’ve caused through the years, there’s no charge.
For all the nights that were filled with dread, and for the worries I knew were ahead, no charge.
For the toys, food, clothes, and even wiping your nose, there’s no charge, son.
When you ______, the cost of my love is no charge.
Well, friends, when our son finished reading what his mother had written, there were great big old tears in his eyes, and he looked straight up at his mother and said: "Mom, I sure do love you. "
And then he took the pen and in great big letters he wrote: "PAID IN FULL. "

Which sentence in the passage is the closest in meaning to the following one
Although you have brought me hard times and many tears in these years, you needn’t pay for them.

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以下哪个模块是BTS9000的主控模块()

A.SICS

B.RM

C.RICAM

D.DDM

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监理工程师应当按照工程监理规范的要求,采取()的形式,对建设工程实施监理。

A.班组互检

B.班组自检

C.巡视

D.旁站

E.平行检验

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