【多选题】以下选项中哪些属于常见的QoS 服务模型()
【简答题】根据资料(1)判断哪些项目属于外币货币性项目,哪些属于外币非货币性项目,并说明理由。
【单选题】Hurry up! Flight 4406 off at 18:40.
【单选题】He has recently ____ tennis to relax himself in his spare time. [ ]
【单选题】He has recently ________ golf to provide himself with some relaxation. [ ]
【多选题】以下哪些属于科研项目承担单位与被吸纳高校毕业生签订的服务协议内容?
【单选题】I am deeply sorry that it has taken so long to () this problem.
A.
straighten up:straighten over