()在有煤与瓦斯突出的煤巷掘进中可采用水力引射器通风方式。

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问题:

()在有煤与瓦斯突出的煤巷掘进中可采用水力引射器通风方式。

考点:巷道掘砌工考试巷道掘砌工中级巷道掘砌工中级题库
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Have you ever considered a trip to Shangri-la!? The British writer James Hilton described a beautiful kingdom 小题1:.where three rivers joined together, steep mountains reached to the sky, and fields of long grass covered the earth. Three mountains, Meili, Baimang and Haba, which are covered with snow, tower over the land. Below the mountain, the sunshine reflects on the many lakes, 小题2:.making them shine like diamonds against the rich countryside. Lakes, surrounded by vast grassland, look like jewels. Sheep, cows and horses feed freely on the green grass and 小题3:.forests around are home to lots of birds and animals. In this peaceful world, 小题4:. 人们与大自然和谐相处and the noise and the worry of the outside world are forgotten. Nature has provided Shangri-la with endless natural treasures, making the land a happy home for the local people. In this perfect world lived people who had discovered 小题5:.如何永葆青青.The weather changes so quickly that people say you can experience four seasons in one day. The best time to visit Shangri-la are spring and autumn when the temperature is at it mildest.

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已知|a|=4,|b|=3,且a>b,则a+b=______.

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“杯具”,一般指生活中的盛水器具——杯子,但我们发现不仅如此:

(1)刚刚过完今年光棍节的李超心情还不错,他觉得自己十分有希望结束多年的“杯具”恋爱史,因为他发现,身边的“校园红娘”越来越多了!(《中国青年报》2009年11月13日)

(2)医学免疫博士却缺乏受挫免疫能力,敢跳楼却不敢面对现实,确实是杯具。(《南方都市报》2009年12月1日)

  “杯具”是“悲剧”在电脑输入过程中的词语变异形式,本身属于别字,是对语言规范形式的偏离。但自2009年10月以来,“杯具”一词在网络、报刊等媒体上广泛流行。请你从积极的角度对“杯具”一词的使用进行评述。

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在Trp浓度的控制下,核糖体停泊在Trp引导区一串Trp密码子上,但并不与之脱离。( )

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有关放射治疗睾丸精原细胞瘤,不正确的是()。

A.I期采用“狗腿野”

B.隐睾采用“曲棍球野‟傲疗

C.II期可采用“狗腿野”+腹主动脉旁野

D.同侧阴囊均应放疗

E.腹股沟野放疗仅少数病人使用

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