Propeller running at （） are generally

1、If a diesel engine were running at 20%

If a diesel engine were running at 20% overload with a smoky exhaust, you should（）Astop the engine immediately to prevent damageBincrease lube...

2、Generally，（）are used as the track char

Generally，（）are used as the track charts on the high sea，（）are used for harbors，inland waters and coastal areas．AMercator charts／Loran cha...

3、Chemical Tankers are generally referre

Chemical Tankers are generally referred to the cargo ships constructed or adapted and used for the carriage of（）.Aliquid chemicals in bulkBsolid chemicals in bulkCchemicals in bulkDcargoes in bulk

4、Exhaust gases are generally removed fr

Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by（）Anatural aspirationBmasked intake valvesCair cellsDscavenging air

5、As the propeller turns，voids are forme

As the propeller turns，voids are formed on the trailing and leading edges of the propeller blades causing a loss of propulsive efficiency，pitting of the blades，and vibration. These voids are known as（）.AadvanceBcavitationCedgingDsli

6、Running an electric winch at slow spee

Running an electric winch at slow speed over a long period of time causes（）.Athe speed to be retarded by the friction brakeBa load to go downward at full speedCthe circuit breaker to turn offDthe resistors to overheat and eventually burn out