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【单选题】
操作系统的三种基本类型是( )A.
批处理系统、分时操作系统及网络操作系统
B.
分时系统、实时操作系统及分布式操作系统
C.
批处理系统、分时操作系统及实时操作系统
D.
网络操作系统、批处理系统、分时操作系统
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反馈参考答案：
举一反三
【简答题】Among the following authors, only one has been called the American Scott. He is _______. A.Washington Irving B.James Fenimore Cooper C.Herman Melville D.Nathaniel Hawthorne
【简答题】( 本小题10分) k代表实数，讨论方程 所表示的曲线.
【简答题】. ( 本小题10分) 代表实数，讨论方程 所表示的曲线.
【多选题】You execute the following piece of code with appropriate privileges: User SCOTT has been granted theCREATE SESSION privilege and the MGR role.Which two statements are true when a session logged in as ...
A.
Data is redacted for the EMP.SAL column only if the SCOTT session does not have the MGR role set.
B.
Data is redacted for EMP.SAL column only if the SCOTT session has the MGR role set.
C.
Data is never redacted for the EMP_V.SAL column.
D.
Data is redacted for the EMP_V.SAL column only if the SCOTT session has the MGR role set.
E.
Data is redacted for the EMP_V.SAL column only if the SCOTT session does not have the MGR role set.
【简答题】绝对误差在理论上是指仪表 和被测量的 之间的差值。工业上经常将绝对误差折合到仪表测量范围的 表示,称为 。
【单选题】Walter Scott is the only novelist of the romantic literature of the 19th-century England and his novels are mainly ( ) novels as far as genre is concerned.
A.
r ealist
B.
h istorical
C.
s entimentalist
D.
p sychoanalytical
【单选题】Scott is the only _____ member of his family. His parents and sister died in the sinking of the Andren Doria years ago.
A.
remaining
B.
alive
C.
surviving
D.
leaving
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