磨机为什么不能长时间空转?
参考答案:
磨机长时间空转不加物料时磨机内钢棒互相磨擦产生大量的热量,这些热量因无法及时散去而不断积累会造成磨损,轴瓦温度就会不断
下列哪种显像剂用于诊断慢性炎症效果最佳()。
A.99mTc-MDP
B.67Ga-枸橼酸镓
C.99mTc-WBC
D.99mTc-IgG
E.111In-WBC
—I hear Mike refused to tell the truth and was taken away by the police.
---Where did you ____?
A.pick it up
B.put that up
C.make that up
D.take that up