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【单选题】
在定点小数机中,下述第 【 】种说法是正确的。A.
三种机器数均不可表示 -1;
B.
三种机器数均可表示 -1；
C.
三种机器数均可表示 -1，且三种机器数的表示范围相同;
D.
原码和反码不能表示 -1，补码可以表示 -1；
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