【简答题】One of Google's self-driving cars crashed into a bus in California last month. There were no injuries. It is not the first time one of Google's famed self-driving cars has been involved in a crash, bu...
【单选题】A 150 cm length of stnng is tied around a book measuring 30 cm x 20 cm x 2 cm as shown in the diagram. After knotting and tying a bow. 24 cm of string was left over. A second piece of string, also 150...