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【简答题】
把2mol/LCuCl 2 溶液和2mol/L盐酸等体积混合（假设混合后溶液体积等于混合前两种溶液的体积之和）．请计算： （1）混合液中CuCl 2 和盐酸的物质的量浓度；______ （2）混合液中H + 、Cu 2+ 、Cl - 的物质的量浓度；______ （3）向溶液中加入足量的铁粉，经足够长的时间后，铁粉有剩余．此时溶液中FeCl 2 的物质的量浓度．______．
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【单选题】The early planes were _____ trains over the same routes. ( )
A.
as fast as
B.
no faster than
C.
faster than
D.
slower than
【简答题】Fog has reduced ______ to under 20 meters and no planes have taken off since early morning.(visible)
【单选题】下列哪组营养素是孕妇最容易缺乏的
A.
能量、蛋白质、钙、铁、锌、叶酸
B.
脂肪、碳水化合物、维生素B2、铜
C.
蛋白质、脂肪、钾、钙
D.
必需氯基酸、必需脂肪酸、维生素B12
E.
能量、钙、维生素A、铁、氟、碘
【单选题】Principle planes will appear as:
A.
normal planes or edges
B.
oblique planes or edges
C.
normal planes or oblique planes
D.
skewed planes or edges
【单选题】In the play Who's Afraid of Virginia Woolf? a woman and her husband spend most of their time quarreling.
A.
arguing on small matters
B.
fighting for who is right
C.
gossiping on their neighbors
D.
teasing on each other
【单选题】The author suggests that the wife keep the money while the husband decides how to spend it.
A.
Y
B.
N
C.
NG
【简答题】阅读理解。 One day in early March of 1993,Pauline and Tom Nichter and their 11-year-old son Jason,were shopping for a toy in Buena Park,CA.Suddenly,Panline saw a wallet lying on the floor.When she looked i...
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