悬臂式斗轮堆取料机轨道修后其接口处的位移和高低不平偏差不大于（）mm。
参考答案：1
David has a stomachache, so _____.
A. he should go to bed
B. he shouldn't eat anything
C. he should lie down and rest
D. he should see a dentist
骨关节疾病核素治疗的原理是什么?疗效如何?
