If a heavy sea strikes the rudder, the shock is transmitted through （） to the rams, this cause a sudden increase in oil pressure in one of the cylinders.

Additional heat extraction from the exhaust gases can b...

单项选择题Additional heat extraction from the exhaust gases can be effected by adding an （） section to the unit in plants.

Oil water separators are used to ensure that ships don’...

单项选择题Oil water separators are used to ensure that ships don’t discharge oil when （） bilge water.

In general, （） is suitable for delivering small quantif...

单项选择题In general, （） is suitable for delivering small quantifies at high pressure.