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【单选题】
下列哪个反应是熵减过程?（ ）A.
AgCl(s) → Ag + (aq)+Cl - (aq)
B.
2NH 3 (g) → N 2 (g)+3H 2 (g)
C.
2O 3 (g) → 3O 2 (g)
D.
2O 3 (g) → 3O 2 (g)
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举一反三
【单选题】对某种商品的需求可以用D(p)=100-p表示,其中p是这种商品的价格。这种商品的供给函数是S(p)=p。现在政府决定对这种商品实行40的最高限价,这对消费者剩余的影响是( )
A.
消费者剩余增加550
B.
消费者剩余增加350
C.
消费者剩余不会发生变化
D.
消费者剩余减少450
【单选题】The schoolchildren got a lot from the magician‘s 查看材料
A.
books
B.
lecture
C.
tricks
D.
fact
E.
memory
F.
list
【简答题】Here’s an unusual story: a diamond ring was recently found in an egg. The magician, Liu Qian, discovered it in front of an audience of million at CCTV’s Spring Festival Gala. Liu’s magic tricks have m...
【简答题】The schoolchildren got a lot from the magician's
【单选题】____ impressed the audience most was_____the magician LiuQian played in last year’s Spring Festival Gala.
A.
What; what
B.
What; that
C.
That; what
D.
That; that
【单选题】The magician's next trick will ________ you.
A.
amazed
B.
assign
C.
assume
D.
astonish
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