单项选择题
A.0.25 B.0.20 C.0.15 D.0.30
A.0.30 B.0.25 C.0.35 D.0.40
A.30° B.40° C.15° D.35°
A.水压试验 B.磁力探伤 C.荧光探伤 D.敲击
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