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【简答题】
有一圆筒,其内径为 1000mm ,厚度为 10mm ,长度为 20m ,材料为 20R (σ b =400MPa ,σ s =245MPa , E=2 × 10 5 MPa ,μ =0.3 )。 (1) 在承受压力时,求其临界压力 p cr ( 10 分) (2) 在承受内压力时,求其爆破压力 p b ,并比较其结果。 ( 10 分)
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举一反三
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to get up
B.
getting up
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get up
D.
got up
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速尿
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氢氯噻嗪
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螺内酯
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【简答题】快读阅读 2 : 在美国俄勒冈州的纽波特海湾,有一家旅店被人们称为 “小说旅馆” 。从外观看去,这个只有3层楼的旅馆与周围的其他建筑没有什么不同,但每年却有数以万计的游客特别是一些喜爱读书的人在这里。 早在8年前,同在一家酒店供职的科利尔和莎莉斯在工作中发现有相当多的客人特别是一些文化人在旅途之余不愿光顾酒吧、赌场、健身房等地,也不喜欢看电影、电视,而是愿意静下心来读一些名著。而在当时,酒店又...
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【单选题】The children were ______ in observing the busying ants on the ground, not hearing the calls of their mother.
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submerged
B.
immersed
C.
drowned
D.
dipped
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【单选题】Hearing the news, he rushed out, the book on the table and disappointed into the distance.
A.
leaving; lying open
B.
left; lay opened
C.
left; lain open
D.
leaving; lie opened
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【简答题】Last year my dad got a new job in a small town,__51__ my family moved there. On my first __52__ at the new school I was really worried. The teachers were friendly, but the __53__ was the other student...
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【简答题】I had been rather proud of myself when my friends and family got the ticket, whether it was for speeding, parking or stop sign violations(违反). It was something that happened to others. But last Friday...
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【多选题】我国消费税说法正确的是（）
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我国的消费税属于选择性消费税。其功能定位是与增值税相配合，发挥调控和聚财作用
B.
国消费税征收范围的选择主要决定于一时期内国家的经济发展，宏观经济政策以及据此制定的消费税的具体政策目标
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对高能耗及高档消费品征收消费税，如小轿车、摩托车等
D.
我国的消费税对不同税目分别实行从价计征和从量计征的方式，没有采用比例税率和定额税率
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【简答题】I had been rather proud of myself when my friends and family got the ticket，whether it was for speeding，parking or stop sign violations (违反)．It was something that happened to others. But last Friday I...
查看完整题目与答案
相关题目：
【单选题】In my family mother is always the first ______.
A.
to get up
B.
getting up
C.
get up
D.
got up
查看完整题目与答案
【判断题】LDL含量与冠心病发病率呈负相关。
A.
正确
B.
错误
查看完整题目与答案
【单选题】急性肺水肿应首选
A.
速尿
B.
氢氯噻嗪
C.
螺内酯
D.
甘露醇
查看完整题目与答案
【简答题】快读阅读 2 : 在美国俄勒冈州的纽波特海湾,有一家旅店被人们称为 “小说旅馆” 。从外观看去,这个只有3层楼的旅馆与周围的其他建筑没有什么不同,但每年却有数以万计的游客特别是一些喜爱读书的人在这里。 早在8年前,同在一家酒店供职的科利尔和莎莉斯在工作中发现有相当多的客人特别是一些文化人在旅途之余不愿光顾酒吧、赌场、健身房等地,也不喜欢看电影、电视,而是愿意静下心来读一些名著。而在当时,酒店又...
查看完整题目与答案
【单选题】The children were ______ in observing the busying ants on the ground, not hearing the calls of their mother.
A.
submerged
B.
immersed
C.
drowned
D.
dipped
查看完整题目与答案
【单选题】Hearing the news, he rushed out, the book on the table and disappointed into the distance.
A.
leaving; lying open
B.
left; lay opened
C.
left; lain open
D.
leaving; lie opened
查看完整题目与答案
【简答题】Last year my dad got a new job in a small town,__51__ my family moved there. On my first __52__ at the new school I was really worried. The teachers were friendly, but the __53__ was the other student...
查看完整题目与答案
【简答题】I had been rather proud of myself when my friends and family got the ticket, whether it was for speeding, parking or stop sign violations(违反). It was something that happened to others. But last Friday...
查看完整题目与答案
【多选题】我国消费税说法正确的是（）
A.
我国的消费税属于选择性消费税。其功能定位是与增值税相配合，发挥调控和聚财作用
B.
国消费税征收范围的选择主要决定于一时期内国家的经济发展，宏观经济政策以及据此制定的消费税的具体政策目标
C.
对高能耗及高档消费品征收消费税，如小轿车、摩托车等
D.
我国的消费税对不同税目分别实行从价计征和从量计征的方式，没有采用比例税率和定额税率
查看完整题目与答案
【简答题】I had been rather proud of myself when my friends and family got the ticket，whether it was for speeding，parking or stop sign violations (违反)．It was something that happened to others. But last Friday I...
查看完整题目与答案