This sentence means "What's your name?" The first vous is a reflexive pronoun. In French, it follows the subject and becomes JEME .../tute .../IL (ELLE) SE .../Nousnous .../You, you ... /ils (elles) Southeast ... which translates as "claim". The second vous is the inversion of the subject.
3. This sentence you saw is Concise French from Sun Hui, right? Hehe, this is an obvious mistake, and my students have asked me many times. The correct way to write it is:
Can you give me a bigger room? Or do you have an apartment in Xiamen? Moi and I are the same ingredients here, and the book is wrong, so we can only use one of them.