问题
单项选择题
TDX140套管段铣器的刀体部件张开是由（）推动的。
A、扭矩
B、钻压
C、活塞
D、转盘或顶驱
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
TDX140套管段铣器的刀体部件张开是由（）推动的。
A、扭矩
B、钻压
C、活塞
D、转盘或顶驱
参考答案：C
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