【单选题】【消耗次数:1】
进展期肝纤维化是指
F0
F1
F2
F3
F4
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【简答题】 设个体域 D={3,4},F(3,3)=F(4,4)=0, F(3,4)=?F(4,3)=1。求命题“$xyF(x,y)”的真值。
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【单选题】 22. He ran a fever yesterday but feels far __________ today.
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