单项选择题

Please tell the function(s) of the underlined part(s) in each sentence.
He found it astonishing how they could accomplish it.
A、adverbial
B、real object
C、complement
D、formal object

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单项选择题

传输时间间隔TTI等于（）

A．0.5ms
B．1ms
C．5ms
D．10ms

载波是周期性信号，不携带信息，可以是正弦波，也可以不是正弦波。

答案：正确