Heavy fuel oils generally have an upper average ash content of 0~1% by weight.Which of the following conditions could be expected if the ash content increase above this amount?（）<br>A:Glazing of the cylinder liners<br>B:Increase valve wear<br>C:Excessive oil pumping<br>D:Increase fuel consumption

Heavy fuel oils generally have an upper average ash content of 0~1% by weight.Which of the following conditions could be expected if the ash content increase above this amount?（）
A:Glazing of the cylinder liners
B:Increase valve wear
C:Excessive oil pumping
D:Increase fuel consumption

出自：海船船员证

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