平行孔系是轴线互相平行且孔距也有精度要求的一系列孔。
查看答案
在普通卧式镗床上可加工孔、外圆、端平面、螺纹和齿轮
A. 对
B. 错
Task 1 Listen to the conversation twice and fill in the missing words.[音频]W: Tell me something 1, Tom.M: Well, I'm a shift supervisor.W: 2 your job?M: I quite like it. But I 3 in two shifts.W: 4 your morning shift?M: I work from 5 in the afternoon in the first week.W: Then how about your night shift?M: I work from two in the afternoon to ten in the evening 6.W: That sounds wonderful. But is there anything 7 about your job?M: Well, frankly, 8.