In which prototyping technique, is a solid physical model of a part obtained directly from a 3D CAD drawing without the use of tooling?
a) virtual prototyping
b) 3D printing
c) rapid prototyping
d) selective laser sintering

Explain how email technologies enable the exchange of messages between users. find out the typical parts of an email address and explain each part.

Hazel has just finished adding pictures to her holiday newsletter. she decides to crop an image. what is cropping an image?

Acontact list is a place where you can store a specific contact with other associated information such as a phone number, email address, birthday, etc. write a program that first takes in word pairs that consist of a name and a phone number (both strings). that list is followed by a name, and your program should output that name's phone number.