问题 单项选择题

一患者出现乏力、厌食,化验血常规结果为Hb90g/L,MCV93fL,MCH28pg,MCH32%。首先应考虑为()

A.血常规各项结果处于正常范围

B.正常细胞性贫血

C.小细胞低色素性贫血

D.单纯小细胞性贫血

E.大细胞性贫血

答案

参考答案:B

阅读理解

Mother’s Day is a holiday for mothers. It is celebrated in the United States, England, India and some other countries. In a short time, it becomes widely celebrated. Mother’s Day falls on the second Sunday in May. On that day, many people send gifts of love to their mothers, those whose mothers are still living often wear a pink or red rose or carnation, while those whose mothers are dead wear a white one.

The idea of a Day for mothers was first given by Miss Anna Jarvis of Philadelphia. As a result of hard work, the celebration of the first American Mother’s Day was held in Philadelphia on May 10th, 1908. Soon the holiday became popular all over the country and all over the world.

In China, people do the same or the day for mothers, and in some cities, people sometimes ask a song to be broadcasted for his or her mother only. This might cost a little money for some of them. But it is said “Love is invaluable.”On May 8, 1999, just the day before the Mother’s Day, this year, just a Chinese mother was killed in criminal bombling. Her name is Shao Yunhuan, a heroic mother. All the Chinese will remember her forever.

小题1:Mother’s Day ________________________.

A. is a holiday for mothers.

B. is celebrated in the United States only.

C. falls on May 10th every year.

小题2:What was the date of the Mother’s Day this year in the passage?

A. May 7, 1999

B. May 8, 1999

C. May 9, 1999

小题3:On Mother’s Day, people ______________.

A. wear a pink or red rose or carnation

B. wear a white flower

C. send gifts of love to their mothers.

小题4:“Love is invaluable ” Here the word “invaluable” means _________.

A.美好的

B.无价的

C.永恒的

小题5:Maybe you have known the criminal bombing, which of the following ideas do you agree to ?                

A. Shao Yunhuan is a great mother.

B. A Chinese mother is the same as an American mother.

C. Both A and B

问答题

F氧化铝厂采用拜耳法生产氧化铝,生产工艺为:原料储运、石灰消化、原矿浆制备、高压溶出、赤泥沉降洗涤、分解与种子过滤、蒸发及排盐、氢氧化铝焙烧与包装等。原料、中间产品、产品主要有:铝土矿、石灰、液碱、燃煤、硫酸、柴油、硫酸铵、赤泥、氧化铝、灰渣、煤气、过热蒸汽、液氨、水等。该厂生产的主要工作由本厂负责,辅助性工作承包给G企业。F厂主办公楼有:2部电梯,1套消防系统,26个灭火器。
F厂自备煤气站和热电站。煤气站生产氢氧化铝焙烧用煤气,煤气生产能力为65000N·m3/h。热电站有3台130t/h燃煤锅炉、2套12MW汽轮发电机组、1套25MW汽轮发电机组。热电站生产270℃的蒸汽,生产能力为220t/h,蒸汽在管道中的输送压力为3.7MPa。
F厂热力工程系统有:主厂房、堆煤场、燃煤破碎筛分输送系统、油泵房、除盐水站、点火泵房、灰渣库、熔盐加热站、除灰系统、供热管网、氨法脱硫系统等单元。工艺间物料采用管道或机动车辆输送。
2010年3月,F厂组织了安全检查,对发现的事故隐患分析表明,现场作业人员没有意识到的事故隐患占31%,查出的两个重大事故隐患Ⅰ、Ⅱ在2010年1月份检查时就已发现。重大事故隐患Ⅰ未整改的原因是F厂的甲车间认为应由乙车间负责整改,乙车间认为应由甲车间负责整改;重大事故隐患Ⅱ未整改的原因是F厂认为应由G企业出整改资金,G企业认为应由F厂出整改资金。
根据以上场景,回答下列问题:

指出F厂热力工程系统中危险因素及其存在的单元。