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【简答题】
谷氨酸的 pK1( α -COOH) = 2.19, pK2 ( α -NH+3) = 9.67, pKR(R 基 )= 4.25, 谷氨酸的等电点为
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举一反三
【单选题】( ) means that every cubic foot of ship’s space must be utilized to the best advantage and the broken stowage reduced to the minimum.
A.
The most efficient use of space
B.
The highest possible port speed
C.
The safety of the cargo
D.
The safety of ship and crew
【单选题】Suppose that the equilibrium price in the market for widgets is $5. If a law increased the minimum legal price for widgets to $6,
A.
the resulting increase in consumer surplus would be larger than any possible loss of producer surplus.
B.
the resulting increase in consumer surplus would be smaller than any possible loss of producer surplus.
C.
any possible increase in producer surplus would be larger than the loss of consumer surplus.
D.
any possible increase in producer surplus would be smaller than the loss of consumer surplus.
【简答题】第二套人民币早期的币种是由( )代为印制的。
【简答题】乙醇和二甲醚（CH 3 OCH 3 ）的组成相同，但前者的沸点为78.5℃，而后者的沸点为-23℃。为什么？
【判断题】If a labor market is dominated by a monopolist, it is possible that the imposition of a minimum wage law could INCREASE the amount of employment in that market.
A.
正确
B.
错误
【简答题】乙醇和二甲醚(CH 3 OCH 3 )的组成相同，但前者的沸点为78.5℃，而后者的沸点为-23℃，为什么?
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