Ⅰ. concept of online class in school
1. concept
Unlike face-to-face learning by attendance at traditional education methods, this refers to a new type of alternative education method, which is carried out by a variety of educational engineering media such as printed materials, broadcasting, communication, and computers, subject to temporal and spatial telephony between professors and learne
Introduction
In 1955 “Disneyland-Mickey Mouse, Little Mermaid, The World of Dream” was opened in Anaheim, California. It was the first theme park opened in by W. Disney. It promoted heartwarming feelings about living together as one big happy family. The Anaheim Park was an instant success. Its annual attendants were over 10 million and 70% of them are adults. Then, in 1971, the success was
and structure of a
surface on the 1–100 nm length scale is important to researchers
studying topics ranging from electronic conduction, to catalysis, to
biological recognition in nanoscale systems.
While microfabrication techniques such as photolithography, microcontact
printing, micromachining, and microwriting can produce patterns as small
as 0.1 mm, producti
3. Columns 4 to 7 indicate, for each item, the purchase unit which is the size of the shipping container (ground beef comes in 10-pound bag), number of purchase units (there are six 10-pound bags in a purchase unit of ground beef), cost per unit (a 10-pound bag of ground beef costs $28.50-or $2.85 per pound), and total cost of the item (six 10-pound bags of ground beef at $28.50 equals $171).