Engine_2014 : Engineering Safety - 447/2355
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| Annual servicing of a hand portable CO2 fire extinguisher includes __________ . |
| A) inspecting the pressure gauge to ensure the needle is within operating range |
| B) weighing the cylinder and recharging if weight loss exceeds 10% of the weight of the charge |
| C) hydrostatic testing of the cylinder |
| D) discharging, cleaning inside, and recharging |
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