thank you,my friends.
i don't have the word "or" in my QRH,but just "and".
i think i can only deal with this malfunction by my "good judgment" rather than the reference directly from the QRH.
and i believe most items in QRH are come from this kind of "good judgment" situation.i hope this could be another.
btw,some people told me there was a checklist called "landing with partial trailing edge flaps" in the old version.i think that would match this situation.
regards