题目
A. first
B. second
C. third
D. fourth
第5题
In a computer, which of the following is the longest period?
A.Beat period
B.Machine period
C.Instruction period
D.CPU period
第6题
In a computer, which of the following is the longest period?(66).
A.Beat period
B.Machine period
C.Instruction period
D.CPU period
第8题
A.relative refractory period
B.absolute refractory period
C.supernormal period
D.absolute refractory period加relative refractory period
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