2. What does the man like to see in autumn?
A. Colors of trees.
B. Leaves fallen on the ground.
C. Both A and B.
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3. Which of the following sports games is NOT mentioned in the talk?
A. Basketball.
B. Volleyball.
C. Football.
4. Which of the following two days are in October?
A. Halloween and Thanksgiving.
B. His birthday and Halloween.
C. Thanksgiving and his birthday.
有关串联式混合动力电动汽车电机峰值功率的选择，正确的是
A. 不小于根据爬坡度和行驶车速计算出的该工况下的整车需求功率。
B. 满足该爬坡工况下的驱动转矩需求。
C. 车辆在爬坡车速行驶时，若电机转速稳定在恒定功率区，则电机峰值功率的选择满足A选项的条件即可
D. 若电机转速稳定在恒定转矩区，则电机峰值功率的选择满足B条件即可。
对驱动电机而言，额定功率一定的情况下，额定转速越高，则体积越小、质量越小。
A. 对
B. 错
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