【单选题】按传输模式分类, 光缆可以分为( )两类。
【单选题】Robert found ______and called out.
【判断题】We can infer that today's baseball player's inappropriate behavior has made baseball less popular and less respectable.
【判断题】Today’s preeminent spectator in America is baseball.
【判断题】焊工进行安全技术培训的主要目的是为了能上岗。
【单选题】—Is this your baseball? —No, it’s Bob’s. Baseball is _________ favorite.
【单选题】按传输模式分类, 光缆可以分为( )两类。