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【单选题】
不出现在人体蛋白质中的氨基酸是A.
精氨酸
B.
瓜氨酸
C.
半胱氨酸
D.
脯氨酸
E.
胱氨酸
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举一反三
【单选题】带缓冲区的字符型输入流类 BufferedReader继承字符型输入流类Reader,然后扩展 了( )方法。
A.
ready ( )
B.
read( )
C.
close( )
D.
readLine()
【单选题】Economic profit
A.
is a theoretical measure of a firm’s performance and has little value in real world decision making.
B.
can be calculated by subtracting implicit costs of using owner-supplied resources from the firm’s total revenue.
C.
is negative when costs exceed revenues.
D.
is generally larger than accounting profit.
【简答题】固体分散体常用的载体材料主要有______、______和______三类。
【单选题】关于难溶性药物速释型固体分散体的叙述，错误的是
A.
载体材料为水溶性
B.
载体材料对药物有抑晶性
C.
载体材料提高了药物分子的再聚集性
D.
载体材料提高了药物的可湿润性
E.
载体材料保证了药物的高度分散性
【单选题】The maximum total economic profit that can be made by colluding duopolists
A.
is less than the economic profit made by a monopolist.
B.
equals the economic profit made by a monopolist.
C.
exceeds the economic profit made by a monopolist.
D.
bears no necessary relation to the economic profit made by a monopolist.
【单选题】Economic profit is
A.
the difference between total revenue and the opportunity cost of all of the resources used in production.
B.
the difference between total revenue and the implicit costs of using owner-supplied resources.
C.
the difference between accounting profit and the opportunity cost of the market-supplied resources used by the firm.
D.
the difference between accounting profit and explicit costs.
【简答题】固体分散体的载体材料有水溶性、（）和（）
【单选题】Economic profit:
A.
cannot be negative.
B.
can exceed the risk-adjusted normal rate of return.
C.
is less than the risk-adjusted normal rate of return.
D.
does not reflect the cost of owner-supplied inputs.
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