【判断题】旅行社的主要职能是为游客提供与旅行相关的服务。
【判断题】提供与旅行相关的服务是旅行社的主要企业性质
【简答题】That big room__________for meeting.
【单选题】只要企业存在固定成本,那么经营杠杆系数必然( )
【单选题】______is forbidden in the meeting-room, but we are allowed in the room for smokers.
【单选题】已知关于x的方程x 2 -10x+m=0有两个相等的实数根,则m= ( ).
【单选题】When everyone was ______ , the meeting began in the meeting room.