钢轨铝热焊头经打磨后的轨头部位应满足：不应出现气孔。
参考答案：错
静压轴承内孔（径向）和端面（推力）的封油面，应通过（）来过到最后精度。
A、刮削
B、镗削
C、研磨
In Hardy's Wessex novels, there is an apparent ______ touch in his description of the simple and beautiful though primitive rural life.
A. realistic B. nostalgicC. romantic D. sentimental
