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【单选题】
CPU交替执行操作系统应用程序。根据运行程序对机器指令的使用权限而将CPU置为不同的状态。用户程序只能运行在( )。A.
管态
B.
目态
C.
处理机状态
D.
核心态
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【简答题】四、 Complete the passage with the best answers. Last summer, I went to Hainan with my family. The 1 was pleasant! The sky was blue, more than I could describe; the sea was blue and bright, more than I ...
【简答题】Last summer,I went to Hainan with my family.The 1 was pleasant!The sky was blue,more than I could describe;the sea was blue and bright,more than I could believe. 2 by the sea is just like being in the...
【单选题】Oil refiners can refine a barrel of petroleum so that it yields either more home heating oil or more diesel fuel. If the price of diesel fuel falls, there is
A.
an increase in the supply of home heating oil.
B.
a decrease in the supply of home heating oil.
C.
an increase in the quantity of home heating oil supplied.
D.
a decrease in the quantity of home heating oil supplied.
E.
an increase in the demand for home heating oil.
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