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【单选题】
只有当内外螺纹的()一致时,它们才能相互旋合。A.
牙型、直径、螺距、旋向、旋合长度
B.
牙型、直径、螺距、旋向、线数
C.
牙型、直径、螺距、导程、线数
D.
牙型、直径、螺距、线数、旋合长度
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A.
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B.
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C.
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D.
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