在多机问题排序中,如果所有机器的功能相同,一个工件只需要在多台机中的一个机器上加工一次,则称为:
A. 平行机排序问题
B. 串联机排序问题
C. 多用平行机排序问题
D. 专用串联机排序问题
E. 上都不是
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---Are there any _______ on the farm?
A. horse
B. duck
C. chicken
D. sheep
---What would you like to drink, _______ or orange?
A. hamburger
B. chip
C. tea
D. cakes
--- They are thirsty. Will you please give them ______ ?
A. some bottles of waters
B. some bottles of water
C. some bottle of water
D. some bottle of waters
The little baby has two _______ already.
A. tooth
B. tooths
C. teeth
D. teeths