One could inquire about a curved stairlift at various websites that helps you make these decisions. Some sites include Florida Stair Lifts and Silver Cross.
One can purchase a stair lift for a household from the Stannah stairlift group. Visit their official webpage. There are other stairlift providers on the internet too.
A Stannah stairlift enables people with disabilities or other physical limitations to get up the stairs almost effortlessly. Therefore, people that regularly have trouble climbing stairs benefit from purchasing one.
One can inquire about the Mormon religion by visiting the Mormon Topics website. There one can ask questions and inquire about various aspects of the religion.
A person could inquire about employment at an ITT corporation by going to numerous job sites. Monster and indeed are good sites to start looking at. Also if a person would know any corporations that have an ITT sector they could personally go to the place and inquire about jobs.
A sphere has just one curved face.
A paraboloid.
There is a Wikipedia page on aqueducts, which may be good for a start. Alternatively one could go to the local library and inquire about books they might have on the topic.
A sphere has one continuous curved surface.
A cone has one curved surface.
One continuous curved edge
The verb inquire has the adjective forms inquiring and inquired. One adverb form is "inquiringly."
One if it is solid, two if it is hollow