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【单选题】
厂商获取最大利润的条件是( )A.
边际收益大于边际成本的差额达到最大值
B.
边际收益等于边际成本
C.
价格高于平均成本的差额达到最大值
D.
价格高于平均可变成本的差额达到最大值
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举一反三
【单选题】Why did James Dean move back to Indiana when he was young?
A.
He lost his mother.
B.
He was unhappy in California.
C.
He missed his aunt.
D.
He had to attend school there.
【单选题】实现计算机联网需要硬件和软件,其中负责管理整个网络的各种资源,协调各种操作的软件的软件叫做( )。
A.
网络操作系统
B.
网络应用软件
C.
通信协议软件
D.
网络数据库管理系统
【单选题】对扣押的原始存储介质,应当会同在场见证人和原始存储介质持有人(提供人)查点清楚,当场开列《扣押清单》一式( )份,写明原始存储介质名称、编号、数量、特征及其来源等,由侦查人员、持有人(提供人)和见证人签名或者盖章。
A.
1
B.
2
C.
3
D.
4
【单选题】So _____ in the darkness that he didn ’ t dare to move an inch. A. he was frightened C. was he frightened B. frightened he was D. frightened was he
A.
he was frightened
B.
frightened he was
C.
was he frightened
D.
frightened was he
【简答题】A．He had a broken leg. B．He had a broken arm. C．He was too scared to move. D．He was too weak to move.
【简答题】设函数 具有二阶连续导数 , 而 满足方程 , 求 .
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