【判断题】晶体三极管工作在放大状态时,发射极电流总是等于基极和集电极电流之和( )
【单选题】十六进制系统信息传输速率是码元传输速率的
【单选题】The waitress tells the man to __________.
B.
drink a cup of coffee after the meal
C.
order shrimp fried rice
【判断题】晶体三极管工作在放大状态时,基极和集电极电流方向总是相同的( )
【单选题】What does the waitress say to Joyce after the order?
B.
Do you like eating here?
【简答题】信息传输速率是( )A. 每秒传输的分组数 B. 每秒传输的二进制码元数 C. 每秒传输的码元数(符号速率) D. 每秒传输的字节数
【单选题】The waitress says that many customers like __________.