皮皮学，免费搜题
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【单选题】
当一个进程处于下述( )状态时,属于阻塞状态
A.
进程被交换到外存
B.
不再有执行资格
C.
等待进程调度
D.
在内存中等待输入
拍照语音搜题，微信中搜索"皮皮学"使用
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