There are several ways for a ship to go into combat with more than one focus or evade token. I see in the rules/FAQ where you cannot perform the same Action more than once in a round, but using a token is not the same thing.
1. Can you spend more than one Evade token during a single defense? (Example: Decimator using 2 evades to cancel 2 hits)
2. Can you spend more than one Focus token during a single attack/defense? (Examples: Use 1 Focus to attack with Proton Rockets and then another Focus to change attack dice results or Use 1 Focus to defend against attack by ship with Gunner and then another Focus when he attacks you a second time)