If you were inspecting the valve springs on an auxiliary diesel engine, your best indication of impending spring failure would be （）<br>A:a glazed surface on the spring<br>B:nicks in the protective coating<br>C:a build up of sludge deposits<br>D:cracks in the surface of the spring

If you were inspecting the valve springs on an auxiliary diesel engine, your best indication of impending spring failure would be （）
A:a glazed surface on the spring
B:nicks in the protective coating
C:a build up of sludge deposits
D:cracks in the surface of the spring

出自：海船船员证

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