单项选择题
Why shiprepair is an inherently difficult business to manage in the conventional sense?（）
A.Because it is difficult to plan and manage B.Because it is cannot be well categorized C.Because it is a difficult work for people to undergo D.Because it is seldom researched by research
单项选择题 In order to improve the efficiency of the communication with shore personnel, you should（）
单项选择题 When accepting engine room spares, you should（）
单项选择题 When you are asked to assist in accepting delivery of goods, you should（）
