Engine : Electricity - 1201/1386
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| Which of the following statements is true concerning the cleaning of electrical contacts? |
| A) Magnetic brushes should be used to remove metallic dust. |
| B) The contact surfaces should be greased to increase contact resistance. |
| C) Compressed air should be used to blow out metallic dust. |
| D) Delicate parts should be cleaned with a brush and an approved safety solvent. |
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