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【单选题】
若[x] 补 = X 0 .X 1 X 2 ···X n ,其中X 0 为符号位,X 1 为最高数位。若( ),则当补码左移时,将会发生溢出。A.
X 0 =X 1
B.
X 0 ≠X 1
C.
X 1 =0
D.
X 1 =1
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