单项选择题
A.3个信号量,初值分别为1,1,0 B.4个信号量,初值分别为1,0,1,0 C.3个信号量,初值分别为k,1,0 D.4个信号量,初值分别为k,1,0,1
A.0~1个、0~n-1个和0~n个 B.1个、0~n-1个和0~n-1个 C.1个、0~n个和0~n个 D.1个、1~n-1个和0~n-1个
A.10(1|010)* B.1*0(1|01*0) C.1*0(1|01*0)* D.10(1|010)