（16分）A的相对分子质量、分子式、结构简式。 （2）写出下列反应的化学方程式：

WHAT can help you make a fortune in the future? Graduating from a top university might not be enough．A new study from the University of Essex in Britain has shown that the more friends you have in school, the more money you’ll earn later．

The idea that popularity could have a serious impact on one’s earning potential shouldn’t come as too much of a surprise．The researchers noted that if you want to get_ahead in life, social skills and networking are easily as powerful as talent and hard work．

“If a person has lots of friends, he or she has the ability to get along with others in all kinds of different situations,” said Xu Yan, 17, from Nantou High School in Shenzhen, who totally agreed with the recent finding．“Also, friends always help each other．They not only create wider social circles for you but lift your mood when you occasionally feel depressed．” She believed that all this helps you “earn a higher salary”．

Maybe that’s why some people think the younger generations are in the age of Friendalholism （交友狂症）．A woman even complained that the networking website Facebook’s 5000-friend limit was too low for her large reserve of social contacts．

But Meghan Daum, who works with The Los Angeles Times in the US, disliked the idea that quantity trumps （胜过） quality in the age of Friendaholism．“Call me uncool, but I think of a friend as an actual person with whom I have an actual history and whom I enjoy actually seeing．” said Daum．She admitted that some Internet social networkers just want to get as many of not-really-friends as possible．Although she agreed that social ties grease （润滑） the wheels of life, she also warned, “Finding a real friend is something that really matters．”

63．What CANNOT be learned about friends from the passage?

A．They enlarge social circles for you．

B．They offer encouragement when you are upset．

C．Only talented friends help you to earn success．

D．Friends enable you to overcome difficulties．

64．In the age of Friendalholism, ________．

A．there are networking websites to help people make friends

B．a person with popularity is sure to enter a top university

C．facebook helps social networkers make as many friends as possible

D．there are always more not-really-friends than actual ones

65．The underlined words probably mean ________．

A．expect      B．struggle    C．graduate   D．succeed

66．Meghan Daum holds the attitude towards making friends that ________．

A．actual friends outweigh not-really-friends

B．the more friends one has, the better

C．friends can help make a big fortune

D．social relations can hardly make one’s life better

三冲量调节

一般情况下不允许用闸刀进行合环和解环操作，特殊情况需用闸刀进行解、合环操作，应先经过计算或试验，并经公司总工程师批准。

某皮带运输通廊为钢平台结构，采用钢支架支承平台，固定支架未示出。钢材采用Q235-B钢，焊接使用E43型焊条，焊接工字钢，翼缘为焰切边，平面布置及构件如图所示。图中长度单位为“mm”。

梁1的最大弯矩设计值M_max=538.3kN·m，考虑截面削弱，取W_nx=0.9W_x。试问，强度计算时，梁1最大弯曲应力设计值（N/mm²）。平台采用钢格栅板，设置水平支撑保证上翼缘平面外稳定。试问，整体稳定验算时，梁1最大弯曲应力设计值（N/mm²），与下列何项数值最为接近（）.
提示：梁的整体稳定系数φ_b采用近似公式计算。

A．176

B．185

C．193

D．206

干青种翡翠主要组成矿物为：（）.

A.透闪石

B.钠铬辉石和鈉质闪石

C.硬玉和钠钙闪石