问题
单项选择题
（） means that a source program file can be compiled and executed on different computers.
A．Portability
B．Usablity
C．Recovery
D．Mobility
答案
参考答案：A
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（） means that a source program file can be compiled and executed on different computers.
A．Portability
B．Usablity
C．Recovery
D．Mobility
参考答案：A