<img src=\"http://image.baidu.com/detail/newindex?col=&tag=&pn=0&pid=37893260497&aid=412842298&user_id=2609025637&setid=-1&sort=0&newsPn=&star=&fr=&from=2\" alt=\"A\" />
B、FCFS 10+11+13+14+19=67
SJF 1+2+4+9+19=35
Nonpreemptive priority 1+6+16+18+19=60
RR 19+2+7+4+14=36

C、FCFS 0+10+11+13+14=48
SJF 0+1+2+4+9=16
Nonpreemptive priority 0+1+6+16+18=41
RR 9+1+5+3+9=27

D、FCFS 48/5=9.6
SJF 16/5=3.2
Nonpreemptive priority 41/5=8.2
RR 27/5=5.4
SJF