（） can be found on most medium to large merchant vessels even if the main engine is either a steam turbine or 2-stroke crosshead engine.<br>A:The medium speed 4-stroke trunk piston engine<br>B:The low speed 2-stroke crosshead engine<br>C:The medium speed 2-stroke crosshead engine<br>D:The low speed 4-stroke trunk piston engine

（） can be found on most medium to large merchant vessels even if the main engine is either a steam turbine or 2-stroke crosshead engine.
A:The medium speed 4-stroke trunk piston engine
B:The low speed 2-stroke crosshead engine
C:The medium speed 2-stroke crosshead engine
D:The low speed 4-stroke trunk piston engine

出自：海船船员证

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