【多选题】ITU-T建议,对于两纤双向复用段共享保护环,保护倒换时间应小于50毫秒的必要条件有()。
【单选题】When a teacher guides students to make necessary improvements in both organization and contents based on either self-editing or peer editing, which stage are they in?
【简答题】8 位移位寄存器,串行输入时 经 个时钟脉冲后,8位数码全部移入到寄存器中。
【判断题】当电压、电流为非关联参考方向时,由 p=ui 算出的是吸收功率的值。
【单选题】When a teacher organizes group work, which of the following might be of the least con-cern?
A.
Increasing peer interaction.
B.
Increasing individual practice.
C.
Developing language accuracy.
D.
Providing variety and dynamics.
【简答题】华为OPTIX设备使用复用段环发生倒换的条件有()。
【判断题】挥杆中心上下的浮动会降低控制,从而导致杆头速度受损,距离减少。