安全第 1264 / 1605 题
In the OSHA soil classification system, which soil type is the most stable?
a.Type B
b.Stable rock, then Type A
c.Previously disturbed soil
d.Type C
解析
OSHA classifies soils as Stable Rock, Type A (most stable soil), Type B, and Type C (least stable). Sloping and shoring requirements become more conservative as soil stability decreases.
法律依据: 29 CFR 1926.652 Appendix A免费刷完整 1605 道题库 — 无需注册。
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