问题 问答题 简答题

油罐着火的特点是什么?

答案

参考答案:

油罐火灾的特点是:一般爆炸后燃烧,其具体特点是:1、没有罐盖的油罐发生火灾时,燃烧猛烈,火焰很高,延伸较远;2、罐盖没有破坏,油罐呼吸阀,人孔起火时,燃烧可能是火炬状,燃烧比较稳定。3、原油和重质油品贮罐发生火灾,由于油品含水和贮罐底层有水,可能发生突沸或喷溅;4、由于油罐爆炸或长时间燃烧,会使罐顶炸开,罐壁变形,安装在油罐上的灭火设备遭到破坏,可能造成罐内油品外流,火势扩大,难以扑救。

阅读理解

In the middle of the first term of school, the entire seventh grade was tested for basic skills. Steve hurried through his tests, and continued to dream of other things. His heart was not in school, but in the woods.

One day, Miss White’s impatient voice broke into his daydreams. “Steve! Pay attention!” Steve turned to look at her, fixing his eyes on Miss White, as she began to go over the test results for the seventh grade.

“You all did pretty well,” she told the class, “except for one boy, and it breaks my heart to tell you this, but...” She hesitated, her eyes searching his face. “...The smartest boy in the seventh grade is failing my class!” She just stared at Steve. Steve dropped his eyes.

After that, it was war! Steve still wouldn’t do his homework. Even as the punishments became more severe, he remained stubborn.

“Just try it! ONE WEEK!” He was unmoved.

“You’re smart enough! You’ll see a change!” Nothing touched him.

“Give yourself a chance! Don’t give up on your life!” Nothing.

“Steve! Please! I care about you!”

Wow! Suddenly, Steve got it! Someone cared about him? Steve went home from school, thoughtful, that afternoon. Walking into the house, both parents were out. He, quickly, gathered up a jar of peanut butter, a loaf of bread, a bottle of water, and this time...his schoolbooks.

The following Monday he arrived at school on time, and he waited for Miss White to enter the classroom. She walked in, all smiles! God, she was beautiful!

Miss White, immediately, gave a quiz on the weekend homework. Steve hurried through the test and was the first to hand in his paper. With a look of surprise, Miss White took his paper. Obviously puzzled, she began to look it over. Miss White’s face was in total shock! The smartest boy in the seventh grade had just passed his first test!

From that moment nothing was the same for Steve. Life at home remained the same, but life still changed. He discovered that not only could he learn, but he was good at it!

He discovered that he could understand knowledge and translate the things he learned into his own life. Steve began to go ahead!

小题1:Steve used to be bad at his lessons because _______.

A.the teacher blamed him from time to time

B.he was not a smart boy in his class

C.the test for the seventh grade challenged his confidence

D.he hadn’t put his heart into his studies小题2:The underlined word “stubborn” in the passage probably refers to “_______”.

A.completely unchanged

B.severely punished

C.careless with the homework

D.lost in the test小题3:It was the _______that made Steve begin to work hard at his lessons later.

A.his parents

B.his classmates

C.the teacher

D.failure in the test小题4:Which of the following descriptions is TRUE according to the passage?

A.Steve often helped his parents work in the woods instead of going to school.

B.The teacher punished Steve for his failure in the test for the seventh grade.

C.Steve not only made progress but finally became a good student of the class.

D.Steve was actually a clever boy, but Miss White hadn’t realized it at first.小题5:Which of the following words best describes Steve’s teacher?

A.Hardworking.

B.Caring.

C.Outstanding.

D.Strict.

单项选择题