第13题: [单项选择]下面关于PC机的并行接口的叙述中,错误的是( )。 A. PC机的并行接口有8条数据线,传递信息时,通过这8条数据线同时发送组成一个字节的全部位 B. PC机并行接口的信号线通过简单的无源电缆线传送时,可以达到RS-232标准的传输距离而不会出现数据错误 C. 目前,PC并行接口的标准是IEEE l284标准 D. 早期PC机的并行接口主要作为并行打印机接口 参考答案:B
第29题: [单项选择]Why did Ted and Grace invite their friends to their house [A] They wanted them to see their new car. [B] They wanted to see the children. [C] They wanted to show them the movies which had been taken when they visited China. 参考答案:C