实行经济核算的核心是（）。

A．实行统一领导、归口分级管理、明确各级经济权限和经济责任制度 

B．建立专业管理和群众监督相结合的机制 

C．诚信为本、操守为重、坚持准则、不做假账 

D．严格执行国家财务制度和会计核算制度规定，加强核算、降低消耗、监督支出、节约投资

Place on deck, in mess rooms,etc.,assigned to crew and passengers, where they have to meet according to the muster list when the corresponding alarm is released or announcement made means（）.

A.deck area

B.dining room on board

C.assembly station

D.hold