As a cold front passes an observer,pressure().
A. drops and winds become variable
B. rises and winds become gusty
C. drops and winds become gusty
D. rises and winds become variable
旅行社接受旅游者的委托,收取代办费用为其代订餐饮旅游服务,出现怎么样的情形由旅行社应当承担赔偿责任?()
A. 旅行社过错
B. 旅游者过错
C. 餐饮公司过错
D. 景点过错
任何情况下接红光带通知后,工务检查人员带上以下工具、材料(通讯工具、回流线3根、道钉450毫米、活口扳手、信号备品照明工具等,按照规定的故障检查处理程序()电务进行巡查。