What is the purpose of a striker plate? （）<br>A:Provides surface for applying force on machinery<br>B:Provides landing surface for the sounding bob<br>C:Absorbs machinery vibration<br>D:Prevents valve stem over-travel

What is the purpose of a striker plate? （）
A:Provides surface for applying force on machinery
B:Provides landing surface for the sounding bob
C:Absorbs machinery vibration
D:Prevents valve stem over-travel

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