Common HazardsCâu 31 / 100
Which is a common caught-in/between hazard during trenching operations?
a.Sunburn
b.Cave-in of unprotected trench walls
c.Loud noise
d.Slippery floors
Giải thích
A cave-in of unprotected trench walls is a deadly caught-in/between hazard because soil is extremely heavy and can bury a worker in seconds. Protective systems and competent-person inspections are essential. Even shallow collapses can cause fatal crushing injuries.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
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