单项选择题
A.朱兰 B.休哈特 C.戴明
A.98.16% B.97.36% C.99.39% D.98.43%
A.90% B.81.6% C.88.3% D.81.03%
A.97.5% B.91.25% C.96.15% D.93.60%
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