单项选择题

Consider a relation R ( A，B，C，D ) with the following dependencies： AB C, CD E, DE B.

A．AB
B．ABC
C．ABD
D．ABE
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单项选择题
White box testing of software testing is a test for software structurE.Which of the following item should not be included in the content of white box
A．boundary value analysis
B．statement testing
C．branch testing
D．path testing
单项选择题
Which of the following methods is used to increase the number of processes sharing the CPU？
A．Interrupt
B．Scheduler
C．Swapping
D．Working Set
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