单项选择题X 纠错
A.8mm B.l0mm C.20mm D.30mm
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单项选择题
A.40mm B.50mm C.60mm D.70mm
A.30°~45° B.30°~50° C.30°~60° D.45°~60°
A.30° B.45° C.10° D.15°
A.30° B.45° C.60° D.75°
A.1/800 B.1/900 C.1/1000 D.1/1200
A.25°~10° B.10°~15° C.1°~5° D.15°~30°
A.25% B.20% C.15% D.5%
A.1.2倍 B.1.3倍 C.1.5倍 D.1.6倍
A.1/3~2/3 B.1/3~1/2 C.1/4~3/4 D.1/5~2/5
A.0.2m B.0.3m C.0.4m D.0.5m
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