单项选择题X 纠错
A.9B.12C.16D.20
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单项选择题
A.10% B.15% C.20% D.25%
A.一年B.半年C.两年D.3个月
A.12mm B.10mm C.9mm D.8mm
A.1个月B.3个月C.6个月D.12个月
A.0.6m,1mB.0.15m,0.5mC.0.3m,0.6mD.0.1m,0.15m
A.6,5mm B.6,8mm C.8,5mm D.8,8mm
A.70mmB.90mmmC.100mmD.120mm
A.150mmB.100mmC.50mmD.30mm
A.100mB.120mC.50mD.30m
A.0.5MΩ,1MΩ B.1MΩ,1MΩ C.1MΩ,0.5MΩ D.0.5MΩ,0.5M
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