Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?（）<br>A:The expansion tank should be topped off<br>B:The thermostatic water regulating valves should be manually opened<br>C:The fuel filters should be changed<br>D:The engine should be turned over slowly with the indicator cocks open

Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?（）
A:The expansion tank should be topped off
B:The thermostatic water regulating valves should be manually opened
C:The fuel filters should be changed
D:The engine should be turned over slowly with the indicator cocks open

出自：海船船员证

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