【简答题】To exchange the water inside of two cups labled by A and B, choose the correct instructions in following options. (2.0分)A. T=A; T=B; B=T; B. T=B; B=A; A=T; C. T=A; B=A; A=B; D. T=A; A=B; B=T;
【多选题】Based on the given view to choose the suitable working length of the pin and show it with the corresponding specification. (Multiple options: 10 points)