问题
单项选择题
转盘至井架底座底面的垂直距离叫做()。
A、联入
B、方入
C、补心高度
答案
参考答案:C
转盘至井架底座底面的垂直距离叫做()。
A、联入
B、方入
C、补心高度
参考答案:C
书面表达 | ||||||||
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