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English Translations » 历史存档[信息] » Daily Safety and Fire Protection Question (12.28)

Daily Safety and Fire Protection Question (12.28)

2016-12-28View Original

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Single-choice question 1: The oxygen content in the air is approximately ( )%. A、20 B、21 C、26 D、272. 2. The explosion limit is the main criterion for assessing the degree of explosion hazard associated with flammable gases, vapors, or dusts. Which of the following statements is correct? ( ) (A) The lower the lower explosion limit, the wider the explosion range, and the greater the risk of an explosion. (B) The higher the lower explosion limit, the wider the explosion range, and the greater the risk of an explosion. (C) The lower the lower explosion limit, the narrower the explosion range, and the greater the risk of an explosion. (D) The higher the lower explosion limit, the narrower the explosion range, and the greater the risk of an explosion. Reference answer: B A
Reply #22016-12-28
1. B, 21 ； 2.(A) The lower the lower explosion limit, the wider the explosion range, and the greater the risk of an explosion.
Reply #32016-12-28
1. B, 21 2. (A) The lower the lower explosion limit, the wider the explosion range, and the greater the risk of an explosion.
Reply #42016-12-28
1. The oxygen content in the air is approximately (B) %. A、20 B、21 C、26 D、272. 2. The explosion limit is the main criterion for assessing the degree of explosion hazard associated with flammable gases, vapors, or dusts. Which of the following statements is correct? (A) (A) The lower the lower explosion limit, the wider the explosion range, and the greater the risk of an explosion. (B) The higher the lower explosion limit, the wider the explosion range, and the greater the risk of an explosion. (C) The lower the lower explosion limit, the narrower the explosion range, and the greater the risk of an explosion. (D) The higher the lower explosion limit, the narrower the explosion range, and the greater the risk of an explosion
Reply #52016-12-28
B. The lower the lower explosion limit of 21 (A), the wider the explosion limit range, and the greater the risk of an explosion.

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Translated at 2026-07-20 22:16:29

Original: https://bbs.hcbbs.com/thread-1656568-1-1.html

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