经过数字化处理之后的数字波形声音，其主要参数有：取样频率、______ 、声道数目、码率，以及采用的压缩编码方法等。
参考答案：量化
– Does this bus go to the 84th street?
--- No, 30th street is _______.
A．the rather the bus will go
B．as far as the bus goes
C．only so far as the bus is going
D．far as the bus is going
豨莶草的功效是（）
A.祛风湿，利关节，解毒
B.祛风定痛，强筋骨
C.祛风，通络，止痉
D.祛风除湿，和胃化浊
E.祛风通络，利水
