1. Nitrogen is a simple asphyxiant and considered nontoxic.

2. Acetylene is a simple asphyxiant and anesthetic.

3. Simple Asphyxiant - Maintain oxygen levels above 19.5%. Extremely flammable.

4. Acetylene is a simple asphyxiant and anesthetic. Experiments have shown there to be no harmful effects from chronic exposure to acetylene at high concentrations.

5. The asphyxiant point decreased with increase in body weight, and increased linearly with the increasing water temperature.

6. Simple Asphyxiant - This product does not contain oxygen and may cause asphyxia if released in a confined area.

7. Under the same water temperature, the oxygen consumption rate and the asphyxiant point decreased as the body weight of the crayfish increased.

8. Several typical flame retardant principles of asphalt flame retardant: absorption of heat, covering, inhibition of chain reaction and asphyxiant action of non-combustible gases, etc. are summarized.

8. try its best to gather and build good sentences.

9. Safety Certificate or equivalent is also required where there is a risk that flammable, asphyxiant, or otherwise hazardous vapours might accumulate within the excavation.

10. The oxygen consumption rate(OCR) and the effect of body weight on the asphyxiant point(AP) of Hemibarbus maculatus Bleeker were studied.

11. Although nitrogen is non-toxic and inert, it can act as a simple asphyxiant by displacing the oxygen in air to levels below that required to support life.

12. Although nitrogen is nontoxic and largely inert, it can act as a simple asphyxiant by displacing the oxygen in air to levels below that required to support life.

13. Although helium is nontoxic and inert, it can act as a simple asphyxiant by displacing the oxygen in air to levels below that required to support life.