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已知[x]补=1.0000 则[x]原=（）， x=（）。注：小数用“.”分隔符号位与数值位，整数用“，”分隔符号位与数值位

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采用IEEE 754单精度浮点数格式表示-65.25，对应的机器数用十六进制表示是（）H。

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