只喷混凝土是指在围岩稳定,地压不大而岩石表面易于风化的巷道中仅喷射()mm混凝土的支

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问题:

只喷混凝土是指在围岩稳定,地压不大而岩石表面易于风化的巷道中仅喷射()mm混凝土的支护方法。

A.10~30

B.20~40

C.30~50

D.40~60

考点:煤矿安全生产知识竞赛煤矿采煤掘进考试煤矿采煤掘进考试题库
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患者,男性,31岁。2小时前在8楼工地不慎掉落,头部着地,当即不省人事,头部伤口渗血,被急送到医院。检查:T36℃,P130次/分,R10次/分,BP80/50mmHg,深度昏迷,GCS4分,脉搏细速,呼吸微弱,双瞳孔散大约7mm,各种反射消失。

假如你是当班护士,你该进行下列哪些护理措施(提示:CT检查发现患者颈椎骨折、右侧额顶颞巨大硬膜外血肿、右颞叶脑挫裂伤、头皮挫裂伤)()。

A.吸痰、输氧、导尿

B.采血标本完成紧急手术前的相关实验室检查

C.建立静脉通道

D.准备床边钻孔引流血肿术物品

E.协助医师清创、包扎伤口

F.心电监护

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函数y=1+log2x,(x≥2)的值域是______.

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某商场某天促销家电销售情况如下表:
电器种类
台数
占销售总量的几分之几
电视
7
 
冰箱
7
 
电动自行车
12
 
空调
8
 
电磁炉
5
 
电脑
6
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Passage Two


Children start out as natural scientists, eager to look into the world around them. Helping them enjoy science can be easy ;there’s no need for a lot of scientific terms or expensive lab equipment. You only have to share your children’s curiosity. Firstly,listen to their questions. I once visited a classroom of seven-year-olds to talk about science as a job. The children asked me" textbook questions" about schooling, salary and whether I liked my job. When I finished answering, we sat facing one another in silence. Finally I said, "Now that we’ve finished with your lists, do you have questions of your own about science"
After a long pause ,a boy raised his hand," Have you ever seen a grasshopper(蚱蜢) eat When I try eating leaves like that, I get a stomachache. Why"
This began a set of questions that lasted nearly two hours.
Secondly, give them time to think. Studies over the past 30 years have shown that, after asking a question, adults typically wait only one second or less tor an answer, no time for a child to think. When adults increase their" wait time" to three seconds or more, children give more logical, complete and creative answers.
Thirdly, watch your language. Once you have a child involved in a science discussion, don’t jump in with" That’s right" or" Very good". These words work well when it comes to encouraging good behavior. But in talking about science, quick praise can signal that discussion is over. Instead, keep things going by saying" That’s interesting" or" I’d never thought of it that way- before", or coming up with more questions or ideas.
Never push a child to" Think". It doesn’t make sense, children are always thinking, without your telling them to. What’s more, this can turn a conversation into a performance. The child will try to find the answer you want, in as few words as possible, so that he will be a smaller target for your disagreement.
Lastly, show;don’t tell. Real-life impressions of nature are far more impressive than any lesson children can learn from a book or a television program. Let children look at their fingertips through a magnifying glass, and they’ll understand why you want them to wash before dinner. Rather than saying that water evaporates, set a pot of water to boil and let them watch the water level drop.

According to the passage, children are natural scientists, and to raise their interest, the most important thing for adults to do is______.

A.to let them see the world around

B.to share the children’s curiosity

C.to explain difficult phrases about science

D.to supply the children with lab equipment

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数据库逻辑设计时,下列原则中不正确的是 (8) 。逻辑结构设计的主要工具是 (9) 。逻辑数据独立性是指 (10)

(8)处填()。

A. 模式变,用户不变

B. 模式变,应用程序不变

C. 应用程序变,模式不变

D. 子模式变,应用程序不变

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