班主任工作的中心环节是_________。
参考答案:组织和培养班集体
— How do you find Xiamen, Cathy?
— It's beautiful coastal city. I have ____ it for my next holiday.[ ]
A. tried on
B. decided on
C. carried on
D. taken on
目标速度,目标高度和目标航向显示在:
A、主飞行显示上
B、导航显示上
C、MCDU显示上
D、不确定