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【单选题】
绕原子核运动的电子可用 4 个量子数来描述它们所处的状态,下列哪个不是其中的一种量子数( )。A.
主量子数 n
B.
角量子数 l
C.
磁量子数 m l
D.
核量子数
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【简答题】synchromesh gearbox
【单选题】Text … 【C1】______Thanksgiving turkey, it' s hard to find【C2】______'American' food. The United States is a land of【C3】______. So Americans eat food from many different countries. When people move to Am...
A.
Except
B.
Except for
C.
Besides
D.
Apart
【单选题】In this text, the author mainly discusses the problem of______.
A.
elitism in best American colleges
B.
anti-intellectualism prevalent in America
C.
alumni preference in college admission
D.
anti-college tendency in America
【单选题】Which of the followings would be the best title for the text?
A.
American Monetary Conundrums Are Readily Deciphered.
B.
American Central Banks Are on the Verge of Extinction.
C.
Conventional Inflation Target Is Best Employed in Transparent Environment.
D.
America's Monetary Policy Is off Target.
【单选题】There's a loud noise in the gearbox of the windlass. 02010506
A.
The windlass is noisy.
B.
The gearbox is noisy.
C.
The windlass noise is low.
D.
The gearbox is low.
【单选题】We ear comude from the text that .
A.
American cities are changing far the worse
B.
people have different views on American cities
C.
many people are now moving from American cities
D.
the population is decreasing in older American cities
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