已知某常压塔的柴油质量流量为60×1000kg/h,管路用Φ159×4.5的无缝钢管

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问题:

已知某常压塔的柴油质量流量为60×1000kg/h,管路用Φ159×4.5的无缝钢管,求煤油在管内的质量流速为多少?

考点:常减压装置考试初级常减压装置初级常减压装置题库
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阅读下面短文,完成文后的任务。

     What is your favorite cartoon? It may be difficult for you to decide. But for the pianist Lang Lang,

Tom and Jerry                       .

     When Lang was two years old, he saw Tom playing the piano. This was his first time to enjoy

Western music and this experience encouraged him to learn to play the piano. His talent for music has

taken him from Shenyang to the world.

     Lang became a good piano student at the age of three. Ever since, the boy has been doing better and

better. In 1997, the 15-year-old boy studied at a famous American music college.

     Lang's performances are energetic. He is wellknown for making facial (面部的) expressions and

moving around while playing the piano. The road to success has never been easy. Lang's father stopped

his job to look after him, while his mother stayed in Shenyang to make money. But Lang thinks himself

lucky and believes he should give something back. He has helped the children in poor areas a lot.

1. 从文中找出与下句意义相近的句子。

    When Lang was three years old, he became a good piano student.

                                                                      

2. 根据上下文,将第一段最后一句补充完整。

    But for pianist Lang Lang, Tom and Jerry                                                                     .

3. 将文中画线句子翻译成汉语。

                                                                      

4. 根据短文内容,回答下面问题。

    How does Lang Lang feel about his success?

                                                                      

5. 根据短文内容,给其拟制一个标题。

                                                                      

题型:问答题 简答题

【选修l——历史上重大改革回眸】改革是推动历史不断前进的动力之一。阅读下列材料:

材料一 :他们中间的大多数和最坚强的人,却开始团结起来,互相激励,不要在这些富人的侵害面前屈服,要选出一个可靠的人,作为他们的领袖,去释放那些已被定罪的负债者,重新分割土地,并对政治制度进行彻底的改革。

在这个时候,雅典人中最明敏的人都把眼光盯在梭伦身上。他们认为,他是唯一和当时罪恶最无牵涉的人物;他既未曾插手于富人们的不义,也没有连累在穷人们的困苦之中。因此,他们请他挺身而出,结束当前的纷争。

——《梭伦传》(摘自《希腊罗马名人传》)

材料二: (王安石)于是上万言书,以为:“自古治世……患在治财无其道尔。”……青苗法者,以常平糴本作青苗钱,散与人户,令出息二分,春散秋敛。均输法者,以发运之职改为均输,假以钱货,凡上供之物,皆得徙贵就贱,用近易远,预知在京仓库所当办者,得以便宜蓄买。……免役之法,据家赀高下,各令出钱雇人充役,下至单丁、女户,本来无役者,亦一概输钱,谓之助役钱。市易之法,听人赊贷县官财货,以田宅或金帛为抵当,出息十分之二,过期不输,息外每月更加罚钱百分之二。保马之法,凡五路义保原养马者,户一匹,以监牧见马给之,或官与其直,使自市,岁一阅其肥瘠,死病者补偿。方田之法,以东、西、南、北各千步,当四十顷六十六亩一百六十步为一方,岁以九月,令一佐分地计量,验地土肥瘠,定其色号,分为五等,以地之等,均定税数。         ——《宋史》卷三百二十七

材料三 :大凡国之强弱,由人民之贫富;而人民之贫富,系物产之多寡。而物产之多寡,虽以人民之勉励工业与否为其胚胎,然寻其源头,未尝不赖政府政官诱导奖励之力。

——《大久保利通文书》第五卷

请同答:

(1)据材料一和所学知识,梭伦“挺身而出”后是如何去“释放那些已被定罪的负债者”和改革“政治制度”的?结合材料与所学知识指出梭伦改革的特点。(6分)

(2)结合材料二与所学知识,为解决财政危机,王安石在“治财有道”的过程中采取了哪些与富商争夺利益的措施? (3分)

(3)你从三次改革的成效中得到哪些启示?(6分)

题型:问答题 简答题

在中国历史上,宦官专权、外戚专权、丞相专权现象出现的根本原因是()。

A.宦官和外戚都是统治阶级中的腐朽势力

B.皇权软弱使然

C.皇权专制制度使然

D.丞相有较强的能力和较大的权力

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请结合工作实际,论述你对目前商业银行开展的个人贷款业务的理解和认识。

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具有跨膜信号传递功能的受体可以分为()、G蛋白偶联的受体和与酶偶联的受体(催化性受体)。

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