卧式车床刀架部件主要用于装夹车刀，并可作纵向和横向运动。
查看答案
卧式车床方刀架部件的丝杠与螺母之间的间隙是可以调整的。
A. 对
B. 错
Ships consume lesser fuel than airplane
A. 对
B. 错
Airplanes are designed to carry dangerous materials.
A. 对
B. 错
If you just want to export small loads, air freight might be a better choice.
A. 对
B. 错
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