【单选题】CO2 对呼吸运动的调节作用主要通过刺激( )。
【简答题】These e-books are not going to ____the printed books, because many people believe that paper books just feel good in their hands.
【简答题】These e-books are not going to __________the printed books, because many people believe that paper books just feel good in their hands.A. replace
【单选题】CO2对呼吸运动的调节作用主要是通过刺激
【单选题】PC机中数字化后的声音有两类表示方式:一类是合成声音,一类是波形声音。下列后缀中属于合成声音文件后缀的是(266)。
【单选题】PC机中数字化后的声音有两类表示方式:一类是波形声音,一类是合成声音。______是一种合成声音文件的后缀。
【单选题】PC机中数字化后的声音有两类表示方式:一类是波形声音,一类是合成声音。(24)是一种合成声音文件的后缀。
【单选题】These e-books are not going to __________the printed books, because many people believe that paper books just feel good in their hands.