单项选择题
行走马达固定法兰盘的螺栓为()。
A.105R016Y050R
B.105R016Y055R
C.105R016Y060R
D.105R016Y040R
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单项选择题
A.105R016Y050R
B.105R016Y055R
C.105R016Y060R
D.105R016Y040R
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