你可能感興趣的試題

A dry-type spark arrestor removes sparks from a diesel engine exhaust by（）

A.increasing the linear velocity of the exhaust gases
B.changing directions of exhaust gas flow
C.decreasing the temperature of the exhaust gases
D.accelerating the exhaust gas through a reduced size orifice

單項(xiàng)選擇題

When the ship is going to enter into the harbor,（）

A.change from heavy fuel oil to diesel oil for mail engine
B.pumping oil bilge water
C.change sea chest form high level one to lower one
D.test emergency generator