单项选择题

Which one of the following statements is wrong regarding software testing （）

A．When 100%statement coverage is achieved, 100% branch coverage is obtained
B．Decision coverage means branch coverage
C．Condition coverage is more complex than decision coverage
D．White box testing is not stricter than black box testing

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单项选择题

The basic function of the file system is accessing files by names. The function can be realized by（）

A．directory—managing
B．boosting the speed of the file—accessing
C．file—protecting
D．improving the utilization of storage

单项选择题

What refers to the page replacement algorithm which replaces the page that has not been used for the longest period of time （）

A．FIFO
B．LRU
C．OPT
D．LFU