A．take awayB．take inC．take offD．take up
A. take away
B. take in
C. take off
D. take up
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The passage supports which of the following conclusion？
A. Without formal education, people would remain ignorant.
B. Education systems need to be radically reformed.
C. Going to school is only part of how people become educated.
D. Education involves many years of professional training.
设系统中A类资源有10个实例，B类资源有5个实例，又设系统中有5个进程P1、P2、P3、 P4、P5。在某一时刻T0，系统状态如下：
A. P2P3P5P4P1
B. P2P4P5P1P3
C. P4P3P1P5P2
D. P5P1P3P4P2
The X. 25 standard specifies three layers of functionality. Which layers of the OSI model
A. the Data Link, Network and Session Layers
B. the Physical, Data Link and Network Layers
C. the Physical, Data Link and Transport Layers
D. the Session Layers, Network Layers and Presentation Layers
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