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【单选题】
在含有大量K ＋ 、OH － 、CO 3 2 － 的溶液中还可能大量存在的离子是A.
NH 4 ＋
B.
Al 3 ＋
C.
Ca 2 ＋
D.
SO 4 2 －
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】哮病的发生,为 内伏于肺,每因 、 、 、 等诱因而引触,以致痰阻气道,肺失肃降,肺气上逆,痰气搏击而发出痰鸣气喘声。
【单选题】At the equilibrium price
A.
there can still be upward or downward pressure on price.
B.
there will be no pressure on price to rise or fall.
C.
sellers would eventually require a higher price.
D.
buyers would not be willing to purchase the output sellers desire to sell.
【简答题】哮病的发生,为 内伏于肺,每因 、 、 、 等诱因而引触,以致痰阻气道,肺失肃降,气道痉挛。
【单选题】At the equilibrium price
A.
the quantity demanded exceeds the quantity supplied
B.
both consumers and films think the price is fair
C.
the quantity supplied encodes the quantity demanded
D.
the quantity demanded equals the quantity supplied
【单选题】At equilibrium,
A.
state probabilities for the next period equal the state probabilities for this period
B.
the state probabilities are all equal to each other
C.
the matrix of transition probabilities is symmetrical
D.
the vector of state probabilities is symmetrical
E.
the fundamental matrix is the same as the matrix of transition probabilities
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