I got banned permanently on wa for using another mod can anyone tell me what can I do to unban my account

How can a broadcast station be received through cable and satellite systems?

Two technicians are discussing the common u-joint. technician a says its input and output speeds should be equal. technician b says that it normally has two yokes. which technician is correct?

Can someone work out the answer as it comes up in one of my computer science exams and i don't understand the cryptovariables