离合器每次滑移间隔至少要等待()分钟,以便保护摩擦片有足够的冷却时间。
参考答案:30
脑血管意外患者突然出现脑疝症状,首先应采取的措施是()
A.吸氧
B.肌内注射呼吸兴奋剂
C.立即静脉注射20%甘露醇或50%葡萄糖
D.立即通知医师
E.立即取高枕卧位
The workers of the textile mill ________ that the trade union leaders be elected from the workshops.[ ]
A. urged
B. related
C. combined
D. adapted