Practice fundamentals
13 questions mixed from all 5 lessons in this unit, in random order. Get five right first time in a row and the set is done.
0 in a row / 5 to finish
Only first-try answers extend the streak.
From Ground & references0 answered · best streak 0
- 1
Two boards each work alone but misbehave when wired together. What is the first thing to check?
