问题 单项选择题 B型题

尿激酶()

A.扩容药物

B.抗凝药物

C.脑保护药物

D.溶栓药物

E.脑代谢活化剂

答案

参考答案:D

阅读理解

阅读理解。

Dear Mom,

     I'm sorry that I can't go back home for Mother's Day next week. On that day, I'll have to go to an

important meeting for my boss, who helps me a lot with my work and life here. But I'll find time to see

you at home soon. 

    Mom, thank you for everything you've done for Tim and me. After Dad died ten years ago, you had to

work in a supermarket in the daytime and in a restaurant at night. But you always gave us two your love and

care. Though you don't have to work now, I still remember your coming home and feeling tired many

evenings.

     Tim is going to finish his studies next month. He said he would move back from school and look for a

job neat home. I'm glad you won't live by yourself anymore. Let's plan to take a trip in the near future. It's

been years since the three of us took a trip together.

    Happy Mother's Day. I love you, Mom.

                                                                                                                                         Best wishes,

                                                                                                                                            John

1. What can we learn about John's mother?

A.  She lives by herself now.

B.  She still works day and night.

C.  She will make a plan to save money.

D.  She used to be too busy to care for her children.

2. What do we know from the letter?

A. John has two brothers.

B. John is unhappy with his boss.

C. John has to work on Mother's Day.

D. Tim will leave home for his job soon.

3. Which is said in the letter?

A.  John's father died at work.

B.  Tim will look for a teaching job.

C.  John bought a gift for his mother.

D.  John hopes to take a trip with his family.

单项选择题

×日,某双苯厂硝基苯精馏塔发生爆炸,造成8人死亡,60人受伤,直接经济损失6908万元,并引发松花江水污染事件。国务院事故及事件调查组认定,该双苯厂“11.13”爆炸事故和松花江水污染事件是一起特大生产安全责任事故和特别重大水污染责任事件。
1.爆炸事故的直接原因是:硝基苯精制岗位外操人员违反操作规程,在停止粗硝基苯进料后,未关闭预热器蒸气阀门,导致预热器内物料气化;恢复硝基苯精制单元生产时,再次违反操作规程,先打开了预热器蒸汽阀门加热,后启动粗硝基苯进料泵进料,引起进入预热器的物料突沸并发生剧烈振动,使预热器及管线的法兰松动、密封失效,空气吸入系统,由于摩擦、静电等原因,导致硝基苯精馏塔发生爆炸,并引发其它装置、设施连续爆炸。
2.爆炸事故的主要原因是:双苯厂对安全生产管理重视不够、对存在的安全隐患整改不力,安全生产管理制度存在漏洞,劳动组织管理存在缺陷。
3.污染事件的直接原因是:双苯厂没有事故状态下防止受污染的“清净下水”流入松花江的措施,爆炸事故发生后,未能及时采取有效措施,防止泄漏出来的部分物料和循环水及抢救事故现场消防水与残余物料的混合物流入松花江。
4.污染事件的主要原因:
一是吉化分公司及双苯厂对可能发生的事故会引发松花江水污染问题没有进行深入研究,有关应急预案有重大缺失。
二是吉林市事故应急救援指挥部对水污染估计不足,重视不够,未提出防控措施和要求。
三是中国石油天然气集团公司和股份公司对环境保护工作重视不够,对吉化分公司环保工作中存在的问题失察,对水污染估计不足,重视不够,未能及时督促采取措施。
四是吉林市环保局没有及时向事故应急救援指挥部建议采取措施。
五是吉林省环保局对水污染问题重视不够,没有按照有关规定全面、准确地报告水污染程度。
六是环保总局在事件初期对可能产生的严重后果估计不足,重视不够,没有及时提出妥善处置意见。
根据以上场景,回答下列问题

该事故如果按照《生产安全事故报告和调查处理条例》的规定,事故等级是( )。

A.特别重大事故

B.特大事故

C.重大事故

D.较大事故

E.一般事故