A．Because the old one could not transfer signals clearly.B．Because the old one could n

A．Because the old one could not transfer signals clearly.

B．Because the old one could not send messages quickly enough.

C．Because the old one could not send more than one message at the same time.

D．Because the old one could only send two messages along the same line simultaneously.

您可能感兴趣的试题

The heavily laden infantry, though enjoying a superiority of six－to－one, simply could not keep to schedule and lost 60000 men in one day.（英译中)

答案解析
There is no question that the old style. of air pollution could kill people. In one week f

答案解析
The helicopter could not land because ______.A．the mountain was too highB．the mountain－sid

答案解析
No one could ever______ this government of not caring about the poor.A．accuseB．chargeC．con

答案解析
The old woman could not .______the terrible noise, and so she closed the windows.A．bearB．a

答案解析
In the old days, the children ____________ by the mother because she did not work outs

答案解析
My _____ words forced the old gentleman into a purchase which he could not possibly

答案解析