某压力锅结构如图所示。盖好密封锅盖,将压力阀套在出气孔上,给压力锅加热,当锅内气体压

题型:问答题

问题:

某压力锅结构如图所示。盖好密封锅盖,将压力阀套在出气孔上,给压力锅加热,当锅内气体压强达到一定值时,气体就把压力阀顶起。假定在压力阀被顶起时,停止加热。

已知大气压强P随海拔高度H的变化满足P=P0(1-αH),其中常数α>0。结合气体定律定性分析在不同的海拔高度使用压力锅,当压力阀被顶起时锅内气体的温度有何不同。

考点:教师招聘考试中学教师招聘笔试教师公开招聘考试中学物理
题型:问答题

选出三个数写乘法算式。

(1)4、7、8、32:□×□=□,□×□=□。

(2)4、9、36、63:□×□=□,□×□=□。

题型:问答题

阅读下面短文并回答问题,然后将答案写到答题卡相应的位置上(请注意问题后的词数要求)。

James Dean came to Hollywood when he was eighteen, hoping to get into the movies. At first, he was not successful at all. Then he went to New York. He got a part in a play and was seen by the great director Elia Kazan. Kazan was planning the movie East of Eden and realized Dean would be perfect for one of the main roles.

By this time, Dean had already had a reputation and was difficult to work with. He then went back to Hollywood to make East of Eden and then made two more movies, Rebel Without a Cause and Giant. He almost always wore the same overcoat and jeans and he had hardly any friends at all. “If he didn’t like you, he wouldn’t even give you the pleasure of his anger. You could be in the same telephone booth with him, but you wouldn’t exist,” someone who knew him said later.

In spite of his poor eyesight, he loved driving fast motorcycles and even faster sports cars. A few days after he finished Giant, on September 25, 1955, Dean went for a drive in his new Porsche. It was evening and the light was poor. Dean was not wearing his glasses. Suddenly, he saw a car in front of him. It was slowing down and trying to turn off the highway. Dean tried to slow down too, but it was too late. He hit the car at high speed and was killed immediately.

A few years later, a New York salesclerk wrote a book called Jimmy Dean Returns in which she claimed that she was in contact with Dean from the other side of the grave. Half a million copies of the book were sold. It was only the beginning of a strange legend(传奇) that goes on, even today.

小题1:Why did James Dean leave Hollywood for New York (within 7 words)

小题2:Who made James Dean famous? (within 2 words)

小题3:Why did James Dean have no friends? (within 7 words)

小题4:What happened on September 25, 1955? (within 8words)  

小题5:What was written in the book Jimmy Dean Returns (within 6 words)

题型:问答题

2011年以来占领华尔街运动由一小批年轻人发起,发展成全美的大规模抗议活动,并蔓延至欧洲,引发对经济危机和资本主义制度进行反思。其中有一些人认为可以从马克思身上开始反思,因而产生了一股 “重新发现”马克思的激情耐人寻味。下列对此分析正确的是

A.经济危机的发生说明资本主义已经不适应生产力的发展

B.这种现象说明经济危机下西方社会普遍向往社会主义

C.这种现象说明西方社会认为马克思主义可以阻止经济危机的出现

D.这种现象说明马克思主义在经济危机的形势下引起人们的进一步关注

题型:问答题

计算措施项目综合单价的方法不包括( )。

A.实物量法

B.总包法

C.分包法

D.参数法

题型:问答题

压力过滤罐反冲洗排污时一般要用()。

(A)3~5min

(B)5~10min

(C)5~15min

(D)10~15min

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