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【简答题】
简述光接收机的组成。
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皮皮学刷刷变学霸
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A.
How long
B.
How
C.
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D.
How often
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A.
By all means
B.
Not in the least
C.
I'm afraid not
D.
I'd rather you didn't
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【简答题】PLC 的输入和输出量有开关量和模拟量两种。开关量I/ 0 用最大I/ 0 通道数表示，模拟量I/ 0 用最大 I/0 点数表示。( )
【简答题】_________came that my English teacher wanted to have _________with me. A．The word;a word B．A word;the word C．Word;a word D．A word;a word
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