合金结构钢牌号的意义以下表述哪个正确()。A、前面两位数字表示平均含碳量的万分之几,

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问题:

合金结构钢牌号的意义以下表述哪个正确()。

A、前面两位数字表示平均含碳量的万分之几,后面的元素表示所含的合金元素

B、前面两位数字表示平均含碳量的千分之几,后面的元素表示所含的合金元素

C、前面两位数字表示平均含碳量的百分之几,后面的元素表示所含的合金元素

D、前面的数字表示合金元素含量,后面的数字表示碳含量

考点:金属材料与热处理金属材料与热处理综合练习金属材料与热处理综合练习题库
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阅读下面短文,根据所读内容在文后第1至第5小题的空格里填上适当的单词或短语。
注意:每空不超过3个单词。
Yang Zhenning ( 1922—)                  
& Li Zhengdao (1926—)                   
Yang Zhenning  and  Li  Zhengdao  both   
studied at a university in Kunming. Later,
they both went to Chicago in America and 
worked with a  famous  Italian-American  
scientist.                               
In 1957, Yang Zhenning and Li Zhengdao   
won the Nobel Prize for Physics for their
studies on the forces between particles (分子). 
They were the first Chinese Nobel  
Prize winners.                           
Ding Zhaozhong (1936—)                     
In 1976. Ding Zhaozhong received the Nobel       
Prize for Physics for his discovery of a whole     
new type of particle. He gave his speech at    
the award (授奖)  ceremony in Chinese.           
Nobody had ever done that before.                  
Ding Zhaozhong Qnly started his formal (正规                   
的) education when he was 12! When he was           
20, he decided to study in America.  He            
worked very hard and after university, he       
became a well-known scientist.          
         
Li Yuanzhe (1936—)                       
Li  Yuanzhe  won  the  Nobel  Prize  for  
Chemistry for his work in 1986. At school.
Li was an excellent student who also took 
part in sports and music.  He also liked  
reading. He read a book on Marie Curie,   
which made him decide to be a scientist.  
Cui Qi (1939—)                                  
Cui Qi received the Nobel Prize for Physics in   
1998. At school, Cui Qi's heroes were Yang          
Zhenning and Li Zhengdao. When he finished     
middle school, he went to study physics at     
 the University of Chicago just as they did,       
and became a professor at Princeton University    
in 1982.                                        
Chinese Nobel Prize Winners
1_____Nobel PrizeYearAchievement
Yang Zhenning
& Li Zhengdao
Physics 1957Studies on 2_____ between particles
Li Yuanzhe3_____1986His work
Ding ZhaozhongDing Zhaozhong4_____Discovery of a whole new type of particle
Cui Qi5_____1998Not mentioned
题型:单项选择题

春季角结膜炎按病变部位可分为三型_________、_________、_________。

题型:单项选择题

管理的基本责任是向员工要结果。

题型:单项选择题

与拱顶罐相比,内浮顶储罐的独特优点是()。

A.钢板耗量少

B.防止风、砂、雨雪及灰尘侵入

C.施工方便、简单

D.降低蒸发损失

题型:单项选择题

刘丽是某机关干部,与丈夫育有一女二子,次子李成是养子。刘丽丈夫去世后,其一人将子女抚养长大。长女李霞成年后定居美国。长子李明成年后与王芳结婚,婚后育有一子李刚。其次子李成患精神病已多年。2008年,李明出车祸身亡,王芳未再婚,一直与婆婆和儿子住在一起,照顾他们的生活。2009年10月,刘丽罹患肺癌住院治疗,虽经王芳数月的细心照料及治疗,仍无法控制病情,6个月后死亡。刘丽的遗产有4间房屋和10万元存款。死前刘丽立有一份遗赠,将其个人存款10万元中的2万元赠送给邻居张某,以感谢她多年来对她家的关心和帮助。其远在美国的女儿李霞打来电话称,刘丽死前曾打电话给她说,其死后全部遗产由李霞来继承,但没有其他证据。

下列说法正确的是( )。

A.王芳没有继承权

B.王芳和其子李刚均享有继承权

C.在遗产处理前,王芳如果没有作出放弃继承的表示,则视为接受继承

D.王芳如果在遗产处理前再婚,则丧失继承权

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