Movement of liquid in a tank when a vessel inclines causes an increase in（）. ["righting arm","metacentric height","height of the uncorrected KG","natural rolling period"]
Which of the following problems can occur if you continually fail to drain off condensate from a starting air receiver?（） ["Corrosion and eventual failure of the tank","Gumming of the tank relief valves","Immediate failure of components downstream of the compressed air system","Boiling of the water oil mixture as pressure is reduced"]
主轴瓦间隙过大时，则易产生敲击，并将发生油流散失，油压降低，瓦衬震裂等事故。
Your tanker is loaded down to her marks，and you find that she has too much trim by the stern. To adjust the trim，you may（）. ["add ballast forward","load more cargo forward","shift bunkers forward","All of the above"]
During the valve overlap period, the exhaust pressure of a turbochargers, four-stroke/cycle diesel engine must be less than the intake manifold pressure to ensure （） ["effective cylinder scavenging and cooling","constant pressure from the turbochargers","cooler operation of the exhaust system","effective constant pressure for turbocharger operatio"]
什么叫投梭力？投梭时间？
