Engine : Engineering Safety - 60/968
|
|---|
| « Previous Question |
| What is the maximum reliable shelf life of a filter gas mask canister if the seal is unbroken? |
| A) 1 year from the date of manufacture |
| B) 3 years from the date of manufacture |
| C) 5 years from the date of manufacture |
| D) 7 years from the date of manufacture |
loading answer...
| Comments |
|---|
| There are no comments for this question. |