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【简答题】
Russian President Putin named Time magazine’s“Person of the Year” Russian President Vladimir Putin was named Time magazine’s“Person of the Year”on December 19th.2007 for strengthening stability(稳定)that made Russia a world power again. The magazine recognized Putin’s“extraordinary feat(技艺)of leadership in taking a country that was in a mess and bringing it stability,”said Richard Stengel,Time’s managing editor. The magazine noted that“Person of the Year”is not an honor or an endorsement(认可)but a recognition of leadership that shapes the world. Putin,who is 56 years old,is very popular in Russia,making a great effort to cause economy to come to life on revenue(收入)from oil and natural gas. Putin recently supported vice-PM Dmitry Medvedev’s presidential bid,and said he would accept Medvedev’s offer to serve as prime minister if Medvedev is elected on March 2. The Kremlin said Wednesday the Time recognition was seen there as an acknowledgement of Putin’s role in helping Russia pull out of its social and economic troubles in the 1990s. Others considered for“Person of the Year”included Nobel Prize-winner Al Gore and author J.K. Rowling. This year’s choice was a return to the magazine’s tradition of picking an individual rather than last year’s choice of“You”,which refers to anyone creating or using content on the World Wide Web. Putin is the fifth Russian(or Soviet)leader to be named Person of the Year:Gorbachev,Andropov,Khrushchev and Stalin,who was named twice. 55.How did Putin try to make Russia a world power again? A.By performing arms race. B.By making war. C.By strengthening stability. D.By getting foreign help. 56.Which of the following is Not True according to the passage? A.Russia used to be in a mess. B.Time always picks an individual to be the“Person of the Year”. C.Oil and natural gas caused Russia’s economy to come to life. D.Putin will leave office on March 2,2007. 57.What does the underlined word“acknowledgement”mean? A.Praise.            B.Support. C.Scold.             D.Recognition. 58.How many times have Russian leaders been named“Person of the Year”so far? A.Five times.          B.Six times. C.Seven times.          D.Eight times.
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【判断题】采用并联电容器提高感性负载的功率因数后,电路的有功功率将变大。
A.
正确
B.
错误
【判断题】联合国粮农组织曾根据恩格尔系数的高低,对世界各国的生活水平进行划分,即一个国家平均家庭恩格尔系数大于 60%为贫穷; 50%~60% 为温饱; 40%~50% 为小康; 30%~40% 属于相对富裕; 20%~30% 为富足; 20% 以下为极其富裕。也就是说,恩格尔系数越低,说明生活水平越高。
A.
正确
B.
错误
【判断题】联合国粮农组织曾根据恩格尔系数的高低,对世界各国的生活水平进行划分,即一个国家平均家庭恩格尔系数大于60%为贫穷;50%~60%为温饱;40%~50%为小康;30%~40%属于相对富裕;20%~30%为富足;20%以下为极其富裕。也就是说,恩格尔系数越低,说明生活水平越高。
A.
正确
B.
错误
【单选题】感性负载并联电容提高功率因数后,负载的有功功率()。
A.
变大
B.
变小
C.
不变
D.
【简答题】感性负载并联电容提高功率因数后,负载的有功功率( )。
【单选题】某感性负载用并联电容器法提高电路的功率因数后,该负载的有功功率P将( )。
A.
保持不变
B.
减小
C.
增大
D.
不能确定
【判断题】联合国根据恩格尔系数的大小,对世界各国的生活水平有一个划分标准, 当 一个国家平均家庭恩格尔系数大于 60% 为贫穷 。
A.
正确
B.
错误
【多选题】k苦杏仁苷水解产生
A.
苯甲酸
B.
苯甲醛
C.
氢氰酸
D.
氢氰酸钠
【单选题】联合国根据恩格尔系数的大小,对世界各国的生活水平有一个划分标准,那么一个国家平均家庭恩格尔系数在什么范围内为富足( )
A.
20%以下
B.
20%-30%
C.
30%-40%
D.
50%-60%
【单选题】为了提高电感性负载的功率因数,并联电容器以后,电路的有功功率将( )
A.
不变
B.
增大
C.
减小
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