计划学派的代表人物是（） ["钱得勒","安德鲁斯","安索夫","迈克尔·波特"]
以下不属于经营管理因素预警信号的是（） ["出现停产、半停产或经营停滞状态","业务性质、经营目标或习惯做法发生变更","主要业务数据呈现出不良的变动趋势","行业内产品积压日益严重"]
If a chartered ship is prevented from，or delayed in，getting to the loading port by peril excepted during the voyage，the exception clauses（）. ["apply","comply","supply","reply"]
船舶灭火战术，只能对其进行综合运用才能达到灭火目的。
Prior to running the hydraulic pump, examine the system carefully and ensure that the lever of control valves is in （） position. ["neutral","end","opening","closure"]
起重作业的特点是什么？
