下载APP
【单选题】
To know the value of one year, ask a student who has failed in a final exam.To know the value of one month, ask a mother who has given birth to a baby.To know the value of one week, ask an editor (编辑) of a weekly newspaper.To know the value of one hour, ask a hungry child the taste of chicken.To know the value of one minute, ask a person who has missed the train, bus or plane.To know the value of one second, ask a person who has survived from an accident.To know the value of one millisecond (毫秒), ask the person who has won a silver medal in the Olympics.Time waits for none of us. Please treasure every second you have!
To know the value of one year, we should ask ______who has failed in a final exam.
A.
a student
B.
a mother
C.
an editor
D.
a child
题目标签：毫秒
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】若干个等待访问磁盘者依次要访问的磁道为 20 , 44 , 40 , 4 , 80 , 12 , 76 ,假设每移动一个磁道需要 3 毫秒时间,移动臂当前位于 40 号磁道,则按 先来先服务算法 完成上述各次访问总共花费的寻道时间是( ), 则按 最短寻道时间优先算法。 完成上述各次访问总共花费的寻道时间是( )。
A.
880，354
B.
875，350
C.
876，360
D.
650，490
【单选题】R-P＇间期>70毫秒，且RP＇/P＇R<1，提示（）
A.
房性心动过速
B.
快慢型房室结折返性心动过速
C.
慢旁路型房室折返性心动过速
D.
慢快型房室结折返性心动过速
E.
快旁路型房室折返性心动过速