A、dissolved oxygen
B、chlorides
C、sludge
D、dissolved nitrogen
更多“The water in an auxiliary boiler should be tested daily for （）.”相关的问题
A、the oil content in water B、the water content in fuel oil C、the water level in bilge well D、the oil level in bilge well
A、the oil content in water B、the water content in fuel oil C、the water level in bilge well D、the oil level in bilge well
A、the oil content in water B、the water content in fuel oil C、the water level in bilge well D、the oil level in bilge well
A、in an area of high density the water's surface is lower than in an area of low density B、surface water flows from an area of high density to one of low density C、the lesser the density gradient the freer the water is to move D、it is the density differences that cause the currents to stay in the troughs
A、A.A decrease in the speed results in a decrease in steering response and maneuverability B、B.An increase in speed results in the stern sucking down lower than the Bow C、C.An increase in speed results in the vessel rising on an even plane D、D.A decrease in speed results in the vessel sucking down on an even plane
A、A.An open vent in the cooling system B、B.A fouled sea chest C、C.A restricted water passage in the engine D、D.Air entrained in the cooling water
A、concentrations of calcium sulfate in the boiler water B、fuel oil in the feed water C、improper treatment of the feed water with calcium sulfate D、excessive feed water alkalinity
A、only after two hours in the water B、only after four hours in the water C、before entry into the water D、upon entry into the water
A、Excessive cylinder liner B、water in the fuel system C、Cracked cylinder liner D、Leaking lube oil cooler
A、remove suspended and precipitated solids from the boiler water B、completely drain the boiler in an emergency situation C、prevent hardened scale deposits in the water drum D、remove floating impurities from the oily water surface
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