单项选择题X 纠错
A.1.5% B.1.0% C.2.0% D.3.0%
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单项选择题
A.1/2 B.1/3 C.2/3 D.1/4
A.30mm B.40mm C.50mm D.60mm
A.70° B.75° C.80° D.85°
A.+50mm B.+100mm C.+150mm D.+200mm
A.3m B.4m C.5m D.6m
A.100mm B.150mm C.200mm D.250mm
A.50mm B.100mm C.150mm D.200mm
A.+20mm B.+30mm C.+40mm D.+50mm
A.5 B.10 C.15 D.20
A.3s B.5s C.10s D.15s
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