单项选择题
A.10%~30% B.10%~20% C.0%~30% D.20%~40%
A.APM B.SPM C.CCLM/ECCLM D.NLM/ENLM
A.1.28 B.2.56 C.-5.12 D.10.24
A.128 B.170 C.-256 D.512
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