单项选择题X 纠错
A.1/250 B.1/500 C.1/750 D.1/1000
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单项选择题
A.0.5 B.1.5 C.2.5 D.3
A.5 B.6 C.8 D.10
A.0.6m B.0.8m C.1.0m D.1.5m
A.200 B.250 C.300 D.400
A.70% B.80% C.90% D.100%
A.110 B.150 C.180 D.200
A.±30mm B.±50mm C.±100mm D.±200mm
A.±300mm B.±100mm C.±150mm D.±200mm
A.±1mm B.±1.5mm C.±2mm D.±2.5mm
A.2.5m B.3.5m C.4.5m D.5.5m
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