住店客人醉酒后，打坏饭店物品，应不予追究。（）

单项选择题商务客人的特点：客人素质高，办事讲究效率，有较强的成本费用意识。（）

单项选择题Porter's five forces model identifies factors which determine the nature and strength of competition in an industry. Which of the following is NOT one of the five forces identified in Porter's model