师生关系主要有专制型和放任型两种类型。
列车乘务服务用语的总体要求是：使用普通话，运用（）、表达得体、通俗、清晰、规范。 ["问候用语","尊敬用语","称呼用语","文明用语"]
1850 TSS支持的同步方式包（） ["TDM timing","Synchronous Etherne","IEEE 1588 V2"]
华多和布歇被誉为（）风格的画家。 ["写实","巴洛克","新古典","罗可可"]
The key lengths for DES and 3DES， respectively， are：（） [" 128 bits and 256 bits"," 128 bits and 384 bits"," 1024 bits and 3072bits"," 64 bits and 192 bits"," 56 bits and 168 bits"," 128 bytes and 384 byte"]
发动机起动工况
