() water is more expensive than fresh water It has high specific heat and low viscosity.
A、Distilled
B、Distilling
C、Boiling
D、Boiled
A、Distilled
B、Distilling
C、Boiling
D、Boiled
A、VHF communications are basically line of sight B、the air is more dense the higher you go C、salt water is a poor conductor of sound D、sea water absorbs the radiated energy
A、to cut down the amount of cooling water needed B、to prevent an excess amount of cooling water from being discharged to the bilges C、to supply hot water to the evaporator for more economical operation D、None of the above is tree
A、the after one is more than forward one B、the forward one is more than after one C、the forward one is the same with after one D、it depends on the type of engine
A、A.east iron is a cheap material B、B.cast iron can pollute sea water C、C.cast iron has mere corrosive than bronzes to sea water D、D.cast iron is more corrosive to sea water when it meets with bronzes
A、normal water supply at the water seal is lost B、the temperature of the inert gas being delivered to the cargo tanks is more than 150°F C、the cooling water supply to the scrubbers is lost D、all of the above
A、more sealing water is needed B、the cover clamp needs tightening C、the purifier has a bad vibration when started D、water is discharged from the overflow line
A、to decrease scale formation B、for better cooling effect C、for more economical purpose D、to raise vacuum