Find the word with the most general meaning in each line: 1)contract, certificate, license, document, declaration 2)computer, telephone, equipment, fax-machine, Xerox 3)control, examine, inspect, check 4)terminal, station, port of entry, airport 5)suitcase, rucksack, handbag, box, baggage 6)camera, X-ray machine, technology, metal detector, fiberscope 7)transport, aircraft, train, truck, ship 8)duty, payment, penalty, fine, tax 9)passenger, customer, broker, trader 10) ask, answer, explain, consult, inform, communicate

1. document
2. equipment
3. control ?
4. port of entry
5. baggage
6.technology
7. transport
8. duty
9. customer
10. communicate