Engine : Expired / Engineering Safety - 946/275
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| The instrument shown in the illustration has not been used for several weeks. Prior to its use for testing a compartment, you should __________. See Illustration SF-0003 |
| A) check or renew the batteries |
| B) purge the meter |
| C) adjust the meter pointer to zero |
| D) all of the above |
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Illustration SF-0003
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