单项选择题
A.±0.5% B.±1.0% C.±1.5% D.±2.0%
A.±0.6% B.±1.0% C.±1.5% D.±2.0%
A.10 B.100 C.200 D.500
A.AD7755 B.BL0931 C.BL0932 D.CS5460
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