2. 计算机
  3. An　analog　signal’s　characteristic　quantity　representing　data　may　　66).　at　any　instant,　any　value　within　a　continuous(67).　For　ex

An　analog　signal’s　characteristic　quantity　representing　data　may　　66).　at　any　instant,　any　value　within　a　continuous(67).　For　ex

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问题 An　analog　signal’s　characteristic　quantity　representing　data　may　　66).　at　any　instant,　any　value　within　a　continuous(67).　For　example,　an　analog　signal　may　follow　continuously　the　values　of　another　physical　quantity　representing　data.A　discrete　signal　is　composed　of(68)elements　in　time,　each　element　having　one　or　more　characteristic　quantities　which　can　represent　data.　Examples　of　characteristic　quantities　are　amplitude,　waveform,(69),　　and　position　in　time.　A　digital　signal　is　a　special　case　of　discrete　signals,　in　which　data　are　represented　by　a(70)number　of　well-defined　discrete　values　that　one　of　its　characteristic　quantities　may　take　in　time.
选项 A、acquire
B、collect
C、assume
D、fetch
答案C
解析
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