单项选择题X 纠错
A.100~200mm B.150~300mm C.200~300mm D.150~500mm
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单项选择题
A.20m B.25m C.30m D.40m
A.200mm B.250mm C.300mm D.400mm
A.0.2% B.0.3% C.0.4% D.0.5%
A.30m B.35m C.40m D.45m
A.1.5m B.2.0m C.2.5m D.3.0m
A.50mm B.60mm C.70mm D.90mm
A.130mm B.150mm C.200mm D.250mm
A.10mm2 B.12mm2 C.16mm2 D.20mm2
A.16mm B.25mm C.35mm D.50mm
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