【单选题】半双工传输支持的数据流的传输特点是( )。
C.
两个方向,但每一时刻仅可以在一个方向上有数据流
【简答题】If a guest stays until the night of the 12 th and leaves on the morning of the 13 th , the d is the 13 th , not the 12 th .
【简答题】明朝的李时珍用27年时间写成巨著_______________ ,被誉为“东方医药巨典”。
【简答题】What is the for this? Is it the 7th or the 8th of November?A. due date