<strong id="crt3i"></strong>

單項(xiàng)選擇題

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

你可能感興趣的試題

單項(xiàng)選擇題

The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated （）

A.for atomizing
B.for centrifuging
C.in a storage tank
D.in the re-circulating line

單項(xiàng)選擇題

The temperature of the fuel oil received during bunkering operation is critical in determining the （）

A.expansion space to leave in a tank
B.flash point at which the fuel will burn
C.temperature to which the fuel must be heated
D.rate at which the fuel can be pumped during transfer operations