液压牵引采煤机液压系统中使用的N100抗磨液压油,黏度指数应大于()。A、50 B、

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问题:

液压牵引采煤机液压系统中使用的N100抗磨液压油,黏度指数应大于()。

A、50

B、90

C、70

D、30

考点:采煤机司机考试采煤机司机考试题库
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—Can Li Hua help me with my English?

—I regret to tell you that her English is _____ yours. Why not ask others for help?

A.as good as

B.no more than

C.no better than

D.as much as

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IEEE802.3标准提供了MAC子层的功能说明,内容主要有()和()两个方面。

题型:单项选择题
I devote myself to music because of my grandmother. My mom and I lived with my grandparents from the time I was two __36__ I was eight. And even then, I was at their house before and after school every day while my mother was __37__.
Grandma loved music. It was she that first __38__ me to Elvis Presley (猫王) as a very young child, and once I heard his music, I was truly in __39__ with it. Most five-year-olds ask for __40__ for birthdays, but I wanted Elvis’ albums. I would play them non-stop and __41__ to the music in my grandma’s family room though my movements didn’t look good.
Grandma played the piano and __42__ me to sing “America the Beautiful” and “Somewhere over the Rainbow”. I __43__ started playing music on the piano, and soon Grandma was paying for me to __44__ piano lessons from a lady living in the __45__. I would come home from __46__ and walk three houses down for my lesson. I __47__ took about nine months of lessons, but it was enough to give me a foundation (基础) and __48__ me to continue to teach myself.
Last month when I came home to visit Grandma in the hospital, I __49__ my guitar with me. She was in a lot of pain, but the music seemed to __50__ her soul. She had me sing some songs and when I started to sing “Somewhere over the Rainbow”, her weakened voice __51__ in with mine for a few lines. That experience was one of the most __52__ of my lifetime and one I will certainly cherish forever. I told her of my music career and she was very __53__ and said, “That’s wonderful!” I __54__ to play for her throughout the week I was home.
My grandma passed away two days ago. In my opinion, part of her will live on through every __55__ I write or sing in my life.
小题1:
A.unlessB.untilC.afterD.when
小题2:
A.at workB.in troubleC.on boardD.in danger
小题3:
A.sentB.leftC.rememberedD.introduced
小题4:
A.debateB.loveC.agreementD.doubt
小题5:
A.musicB.spaceC.giftsD.toys
小题6:
A.waveB.sleepC.danceD.play
小题7:
A.forcedB.preparedC.enabledD.taught
小题8:
A.generallyB.eventually(最后)C.suddenlyD.fortunately(幸运地)
小题9:
A.observeB.makeC.takeD.enjoy
小题10:
A.hotelB.apartmentC.neighborhoodD.countryside
小题11:
A.schoolB.hospitalC.streetD.office
小题12:
A.exactlyB.onlyC.completelyD.seldom
小题13:
A.askB.makeC.letD.allow
小题14:
A.gave upB.gave awayC.brought alongD.brought up
小题15:
A.comfortB.blameC.attractD.find
小题16:
A.joinedB.pouredC.movedD.fell
小题17:
A.surprisingB.touchingC.puzzlingD.tiring
小题18:
A.sadB.calmC.boredD.pleased
小题19:
A.refusedB.expectedC.continuedD.pretended (假装)
小题20:
A.projectB.articleC.bookD.song
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我国现阶段之所以要坚持以公有制为主体,是因为公有制 [ ]

A、是我国的基本经济制度阶段

B、是我国国民经济的主导力量

C、是社会主义经济制度的基础

D、在任何地区都比非公有制经济更能促进生产力的发展

题型:单项选择题

多绳提升机靠()实现容器的提升和下放。

A.钢丝绳张力

B.钢丝绳平衡力

C.钢丝绳和衬垫的摩擦力

D.绞车滚筒的提升力

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