Engine : Expired / General Subjects - 220/881
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| Why should the use of metallic or semi-metallic packing hooks or pullers be avoided on bronze or brass shafts, rods, plungers, or sleeves? |
| A) Bonnet corrosion may result. |
| B) Scoring may result. |
| C) Valve seat will be damaged. |
| D) Heat transfer is restricted. |
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