智慧职教: Who transmits and receives signal to and from the satellite using L band frequency?

_____, the train started. A: The signal given B: Giving the signal C: The signal being given D: The signal giving

2. Railway signals can be divided into home signal, starting signal, distant signal, repeating signal and shunting signal.

下列（）不能用于预测蛋白质是否含有信号肽。 A: SignalP B: Signal-3L C: LipoP D: TaaP

‌下列（）不能用于预测蛋白质是否含有信号肽。‎ A: SignalP B: Signal-3L C: LipoP D: TaaP

what is an analog signal? A: Analog signal is a continous values B: Analog signal is a discrete values C: Analog signal is sometimes continous,sometimes discrete

________, the train started. A: The signal given B: After the signal was given C: Given the signal D: A and B

According to the meaning of stop signal, it is divided into absolute signal and _____.

According to the meaning of stop signal, it is divided into absolute signal and （ ）. A: clea B: permissive signal C: estricting D: approach

The radiotelephone safety signal is（）. A: securite repeated 3 times B: safety repeated 3 times C: pan pan repeated 3 times D: securite securite repeated 3 time