鼓风机轴承温升过高主要是由哪些因素引起的?

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问题:

鼓风机轴承温升过高主要是由哪些因素引起的?

考点:煤气净化回收工艺鼓冷段鼓冷段题库
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已知M是关于x的不等式2x2+(3a-7)x+3+a-2a2<0的解集,且0∈M,求实数a的取值范围。

题型:问答题 简答题

现阶段,我国社区卫生服务组织的基本功能之一是

A.社区居民的慢性病研究

B.社区居民的慢性病防治

C.社区居民的危重病人管理

D.社区居民的急诊救护

E.以上都是

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It had been three months since Ms Miller had started teaching. She was gradually being able to understand all her students, except one, Bob. Bob was the only boy who came to school dressed untidily and sat in the class completely lost in his own world. His performance had been deteriorating gradually with every single day.

Ms Miller searched through the progress reports of Bob and was shocked to see Bob used to be the topper in his class. Bob's performance began to slowly decline when his mother fell ill. He was doing badly in each and every subject when his mother died leaving him alone with his father, who was a businessman and had to travel always. Apart from his performance worsening gradually, Bob's nature too began to change. He had forgotten to laugh and showed no interest in any activity. All his friends had abandoned him.

One day, Bob was asked to stay back.Ms Miller asked him if he had any problem understanding his lessons. Gradually she began to give him a comfort zone so that he could talk and share. After three weeks, she found Bob gradually improving. He was being able to answer the questions he previously failed. Every day after all the students went away, Ms Miller gave personal attention to Bob and began to spend time with him. Bob improved a lot over the next semester, showing definite signs of progress in his performance.

On a Friday, Bob came up to Ms Miller, handed her a box and requested her to open the box on Sunday. On Sunday morning, curious, she opened it and saw a bottle of perfume, half filled. Together with it was a small letter, saying that this bottle of perfume used to be his mother's and he wished Ms Miller to wear it so that every time she was around, he could feel his Mom near him. He thanked her for everything. Ms Miller took the bottle of perfume in her hand and saw a new tag attached to it; it said "Happy Mother's Day”!

Ms Miller suddenly realized that it was not she who had made a difference to Bob's life but it was Bob who made her realize what true humanity is!

小题1:According to the text, Bob________.

A.wore clean clothes all the time

B.was taller than any other one in his class

C.lost all of his friends after his mother's death

D.could always have his father for company at home小题2:The underlined word "deteriorating" in Paragraph l probably means________.

A.worsening

B.changing

C.thrilling

D.Improving小题3: Paragraph 3 is mainly about________.

A.why Ms Miller would like to help Bob.

B.what Ms Miller did to help Bob.

C.how Bob attracted Ms Miller’s attention.

D.where Bob could sit comfortably小题4:The bottle of perfume given to Ms Miller______.

A.showed Bob was thankful for Ms Miller’s help

B.was given on Mother’s Day

C.made Bob a different student

D.was new and never used before小题5:What does the author wanted to tell us ______.

A.a teacher can totally change a student’s life

B.family is the most important place for kids

C.children don’t have to solve problems by themselves

D.one should have sympathy for another’s suffering and offer help

题型:问答题 简答题

下列内容符和良种肉用品种秦川牛形体特征的选项是()。

A、毛色枣红色

B、颈部发达

C、体型短小

D、毛色黄白

题型:问答题 简答题

矿渣水泥,当()中任何一项不符合标准规定均为不合格品。

A.细度

B.初凝时间

C.终凝时间

D.安定性

E.mgO含量

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