Coast guard testing info

well i am here asking a question more or less i am wanting to know about the questions that coast guard put up on the website to study, why did they split up the general subjects for the engineering exam questions? Also i am taking the chief osv unlimited hp near coastal 3000ton itc which of the two should i be more concerned with general subjects 1,2 or both?

Are you sure that it’s not Motors that they split in two?