16ASK,每个电平传输____比特信息。 A: 16 B: 2 C: 4
16ASK,每个电平传输____比特信息。 A: 16 B: 2 C: 4
16ASK,每个电平传输（ ）比特信息。 A: 16 B: 8 C: 2 D: 4
16ASK,每个电平传输（ ）比特信息。 A: 16 B: 8 C: 2 D: 4
Passengers ______ to fasten their belts. A: ask B: will ask C: to ask D: are asked
Passengers ______ to fasten their belts. A: ask B: will ask C: to ask D: are asked
I ______ a question. I did not ______ an answer. A: asked……ask for B: asked……ask C: asked for……ask for D: asked for……ask
I ______ a question. I did not ______ an answer. A: asked……ask for B: asked……ask C: asked for……ask for D: asked for……ask
给定 Eb/N0，下列调制方式中误比特率最低的是___。 A: 16FSK B: 16ASK C: 16QAM D: 16PSK
给定 Eb/N0，下列调制方式中误比特率最低的是___。 A: 16FSK B: 16ASK C: 16QAM D: 16PSK
The student is shy and he ______ questions in class. A: dares not ask B: does not dare to ask C: dares not to ask D: does not dare ask
The student is shy and he ______ questions in class. A: dares not ask B: does not dare to ask C: dares not to ask D: does not dare ask
6. Don't be afraid to______advice about things you are not good at. A: ask for B: ask to C: ask about D: ask out
6. Don't be afraid to______advice about things you are not good at. A: ask for B: ask to C: ask about D: ask out
If I were to see Tom, what ( )_ you me to tell him? A: are ,going to ask B: do , ask C: would , ask D: did, ask
If I were to see Tom, what ( )_ you me to tell him? A: are ,going to ask B: do , ask C: would , ask D: did, ask
If you have any problems, come to me and _____ help. A: ask about B: ask out C: ask for
If you have any problems, come to me and _____ help. A: ask about B: ask out C: ask for
Differencebetween“ask”and“request”:“Ask”istheusualwordforspeakingorwritingtosomeoneinordertogetsomethingdone.“Request”ismoreformal.
Differencebetween“ask”and“request”:“Ask”istheusualwordforspeakingorwritingtosomeoneinordertogetsomethingdone.“Request”ismoreformal.