答案:B
Try to ______ the children down. They’re too excited.
A.put
B.calm
C. pull
D.push
浮选机岗位中修的项目有:()
A、更换磨损严重的刮板叶片
B、更换磨损的叶轮、盖板、橡胶轴瓦
C、处理中间箱和尾矿箱的漏矿处
D、处理槽体、给矿箱漏矿处