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【单选题】
在各种作业调度算法中，若所有作业同时到达，则平均等待时间最短的算法是（）。A.
先来先服务
B.
优先权算法
C.
最高响应比优先
D.
短作业优先
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【单选题】听力原文：Dear Sir, After watching the discussion about boxing on television last night, I felt I must write to you. Before I saw this program, I had not given any thought to the dangers of boxing. However...
A.
He had thought it dangerous.
B.
He bad thought it bloody.
C.
He had thought there was nothing wrong with the sport.
D.
He had not given any consideration to the dangers of the sport.