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【简答题】
亚里士多德把（）等同于最高的善，认为它是人相互之间的一种道德性结合。
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皮皮学刷刷变学霸
举一反三
【简答题】UNIX 是一种( )式、分时、多用户的操作系统。
【单选题】What are the functions of PSAs?
A.
PSAs can automatically monitor life support systems, snapping photos, and taking overmonitoring tasks from failed sensors.
B.
They are capable of videoconferencing so that they offer a virtual presence of ground crows and scientists.
C.
They can go where no man has gone since the vehicles were first assembled.
D.
All of the above mentioned.