安全第 1351 / 1605 题
A protective system that uses a trench box or shield to protect workers is called:
a.Benching
b.Sloping
c.Sheeting
d.Shielding
解析
Shielding uses a trench box or shield that does not prevent a cave-in but protects workers inside it. Sloping and benching cut back the walls; shoring supports them. Shielding is a distinct method.
法律依据: 29 CFR 1926.652免费刷完整 1605 道题库 — 无需注册。
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