Fixed deadlocks

Fixed financial information abnormality

Improving the aircraft income statement

Fixed the problem of unreasonable maintenance fee

Fixed freight revenue does not show the problem

Fixed airline type exception

Fixed the problem that the freighter can't be scheduled

处理跳出BUG

处理财政信息异常

改进飞机损益表

处理维护费不合理问题

处理货运收入不显示问题

处理航空公司种类异常

处理货机不能排班的问题