The greater the surface roughness value, the better the wear resistance and corrosion resistance of the part.

设备基础地脚螺栓的固定按埋设方式，分为活、死地脚螺栓两种，活地脚螺栓由于可后期调整，故应用较广。

判断题设备基础地脚螺栓的固定按埋设方式，分为活、死地脚螺栓两种，活地脚螺栓由于可后期调整，故应用较广。

A “documents against payment” term in an international ...

单项选择题A “documents against payment” term in an international sales contract is used when the buyer wants to confirm that the goods have been shipped before making payment.
A、正确
B、错误

八缸式平衡装置工作时，上支撑辊平衡缸平衡上支撑辊重量。

判断题八缸式平衡装置工作时，上支撑辊平衡缸平衡上支撑辊重量。