How can robots help humans explore?

Why do natural gas lines have to break ground before entering a building? What are the data required for bridge design? What kind of soil is good for growing cotton? Driving belt for maximat emco 10? Who is inventor of 5s? Anyone have a manual for a Monarch Machine Tool Co Model A lathe? When operator function is declared as friend function? What is the household AC electrical power service in the US? Does Russia good in computer engineering compare to US? Can vent be put in gully trap? Why do you use ohms as a measurement for resistors? What is the maximum dimension of array can be accepted in c? Who invented dead weight testers? What is a function to read chars from a certain position to another position in file in C? Plastic section modulus for beam sections- Any computer program for calculating the plastic moment or modulus for any beam section is available? How much crude oil as a percent of total crude brought in on average does a typical oil refinery burn to make it's various products? Who is the protagonist in the story all the years of her life? How can you prepare 1 weight percentage of CMC? How do you Compare two full wave rectifier? What is the difference between square text-wrap and tight text-wrap?