油泵的理论流量取决于()A、转速和结构参数 B、转速和工作压力 C、转速和工作温度

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问题:

油泵的理论流量取决于()

A、转速和结构参数

B、转速和工作压力

C、转速和工作温度

D、结构参数和工作压力

考点:数控机床操作工考试数控机床操作工考试题库
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电力企业的营业管理工作属电力销售环节。

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忧与下述哪一脏的功能活动有关

A.心

B.肝

C.肺

D.脾

E.肾

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某研究人员为了探究冰和水的体积与温度的关系,在一定环境下将1g的冰加热,分别记录其温度和体积,得到了如图所示的图象.请你观察此图象回答下面的问题。

(1)冰从-4℃上升到0℃时,体积将______。

(2)水从0℃上升到4℃时,密度将______。

(3)冰熔化成水时,____不变,____变小。

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A公司在国外物色了B公司作为其代售人,并签订了寄售协议。在货物运往寄售地销售的途中,遭遇洪水,使30%的货物被洪水冲走。因遇洪水后道路路基需要维修,货物存仓发生了6000元的仓储费,以上损失的费用应由()。

A.A公司承担

B.B公司承担

C.由运输公司承担

D.B公司所在国家的保险公司承担

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I suddenly heard an elephant crying as though frightened Looking down I immediately recognized that something was wrong and ran down to the edge of the near bank There I saw Ma Shwe with her three-month-old calf struggling in the fast-rising water and it was a life-and-death struggle Her calf was floating and screaming with fear Ma Shwe was as near to the far bank as she could get, holding her whole body against the rushing water and keeping the calf pressed against her huge body . Every now and then the rushing water would sweep the calf a way.

There was a sudden rise in the water and the calf was washed clean over the mother’s body and was gone Ma Shwe turned quickly to reach it and pressed the calf with her head and trunk(象鼻)against the rocky bank Then with a huge effort she picked it up in her trunk and tried until she was able to place it on a narrow shelf of rock

Just at this moment she fell back into the river If she were carried down it would be certain death I knew as well as she did ,that there was one spot(地点)where she could get up the bank  but it was on the other side from where she had put her calf

While I was wondering what I could do next I heard the sound of a mother’s love Ma Shwe had crossed the river and got up the bank and was making her way back as fast as she could roaring(吼叫)all the time but to her calf it was music.

56.The moment the author got down to the river bank he saw______.

A.the calf was about to fall into the river

B.Ma Shwe was placing the calf on the rock

C.the calf was washed away by the rising water

D.Ma Shwe was holding the calf against the rushing water

57.How did Ma Shwe manage to save her calf from the fast-flowing water?

A.By putting it on a safe spot

B.By pressing it against her body

C.By taking it away with her

D.By carrying it on her back

58.How did the calf feel about the mother elephant’s roaring?

A.It was a great comfort      B.It was a sign of danger

C.It was a call for help       D.It was a musical note

59.What can be the best title for the text?

A.A Mother’s Love           B.A Brave Act

C.A Deadly River            D.A Matter of Life and Death

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