悬挑转料平台上应显著地标明()。
A.设计责任人
B.容许荷载值
C.平台面积
参考答案:B
自动称阻尼器采用油阻器,它利用()产生一种与物料冲击力相反的阻尼力,使称箱减少振动。
What information will a distress alert contain?()
A.nature of distress
B.type of assistance required
C.course and speed and time at which the information was recorded
D.A, B, C are all right