加工精度是指零件加工后实际几何参数与()的几何参数的符合程度。
A、导轨槽
B、理想零件
C、成品件
D、夹具
参考答案:B
---Monitor? --- I’m not monitor of our class. I __ with the teacher until the monitor is elected.
A.will just help
B.am just to help
C.am just helping
D.have just helped
与中枢乙酰胆碱能有关的疾病是:
A.老年性痴呆
B.躁狂症
C.抑郁症
D.精神分裂症
E.核黄疸