(71) means that a program written for one computer system can be compiled and run on another system with little or no modification.
综合知识
72/75
Data items are added or deleted from the list only at the top of the (72)
综合知识
73/75
(73) statement can perform a calculation and store the result in a variable so that it can be used later.
综合知识
74/75
The (74) scheme in a database system is responsible for the detection of failures and for the restoration of the database to a state that existed before the occurrence of the failure.
综合知识
75/75
Software (75) focuses on three attributes of the program: software architecture, data structure, and procedural detail.