An efficient seal between the cylinder block and cylinder heads on many diesel engines is obtained with（）<br>A:graphite packing<br>B:sealing compound<br>C:lubricating oil<br>D:gaskets

An efficient seal between the cylinder block and cylinder heads on many diesel engines is obtained with（）
A:graphite packing
B:sealing compound
C:lubricating oil
D:gaskets

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