瓦斯及二氧化碳浓度检查次数是怎样规定的?

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问题:

瓦斯及二氧化碳浓度检查次数是怎样规定的?

考点:瓦斯检查工考试瓦斯检查工考试题库
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It seems that the cities in the future will have to change. Because the world’s population    , there will be         people in the cities tomorrow.
It may be           for any family to live in a house with land around it. There           enough space for them.           to solve this problem may be the skyscraper city(摩天城). The highest building in the world today is in Taipei. It’s about 509 metres high. The skyscraper cities in the future will be many times         .
In a skyscraper city about 250,000 people will live. Nearly a million people can          in four of these great buildings. Each skyscraper city will have four towns in it and each town will have ten villages. They will live, work and          their free time in them. They won’t need to leave the city          they want to. They will be able to move about in the city by transport controlled        computers. Let’s imagine how the life will be then!
小题1:
A.has grownB.is growingC.are growingD.have grown
小题2:
A.manyB.muchC.moreD.larger
小题3:
A.impossibleB.possibleC.importantD.necessary
小题4:
A.aren’tB.won’t beC.won’t haveD.haven’t
小题5:
A.A wayB.A roadC.An answerD.An idea
小题6:
A.lowerB.shorterC.tallerD.higher
小题7:
A.liveB.studyC.workD.be
小题8:
A.spendB.costC.payD.take
小题9:
A.untilB.whenC.whileD.unless
小题10:
A.byB.atC.withD.in
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以下各项都是缩短周期时间的有效方法,除了:()

A.缩小每批生产量

B.同步生产计划

C.适时制制造

D.“推动”式生产方法

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()是立教之本、兴教之源。

A、学生

B、教师

C、学校

D、教材

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依照天平分类.常量天平的最大称量一般在

A.20~50g

B.50~100g

C.100~150g

D.100~200g

E.150~200g

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岁寒,然后知松柏之后也。

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