判断题 You can use PC to do a lot of things, such as type documents, send E-mail, browse the Web and play games.

判断题 CPU oversees everything that a computer does.

判断题 In a FIFO data structure, the first element added to the queue will be the last one to be removed.

判断题 Linked lists permit insertion and removal of nodes at any point in the list in constant time, but do not allow random access.

判断题 Memory is the brain of the computer.

判断题 Hard disks are used to hold information such as programs and documents.

判断题 Stacks are used at all levels of a modern computer system.

判断题 The topmost node in a tree is called leaf nodes and will not have children.