A、 4=M
B、 M=-M
C、 B=A=3
D、 X+Y=0
答案:B
A、 4=M
B、 M=-M
C、 B=A=3
D、 X+Y=0
答案:B
A. 欧拉
B. 迪克斯特拉
C. 克鲁斯卡尔
D. 普里姆
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A. “甲种产品滞销,乙种产品畅销”
B. “甲、乙两种产品均畅销”
C. “甲种产品滞销”
D. “甲种产品滞销或乙种产品畅销”
A. -4
B. 0
C. 2
D. 4
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