They are so short, you can really only do WRI's
Actually they are anaerobic capacity intervals.
I'm guessing you can do the climbs in under a minute? You can pace them two ways:
1. Start with an all-out sprint, and then keep pedaling as hard as you can until the top (your speed/power will fade) This is the WRI method, or:
2. Do them at a steady intensity that you can just hold until the top (your speed/power remain relatively steady)
Soft-pedal for a few minutes between reps. Try for at least 5. Stop when your time to the top becomes noticably longer.
Oh, and use both climbs.