산업안전기사 2021년 3회 49번

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과목: 기계위험방지기술

문제[edit | edit source]

49. 연강의 인장강도가 420MPa이고, 허용응력이 140MPa이라면 안전율은?

  • ① 1
  • ② 2
  • ③ 3
  • ④ 4

풀어보기[edit | edit source]

정답[edit | edit source]

  • 3번

해설[edit | edit source]

같이 보기[edit | edit source]

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