—My mother is nice to all her students. And she gets on well with all her friends.
A:What's your mother?
B:What's your mother like?
C:What does your mother look like?
D:What does your mother like?
某同学用伏安法对四个电阻各测量一次,把每个电阻两端的电压和通过它的电流在U-I坐标系中描点,得到了右图中甲、乙、丙、丁四个点,若将这四个电阻并联在同一电路中(不考虑温度对电阻的影响),则电路中消耗的电功率最大的是( )
中小学校园欺凌事件时有发生,一言不合,就扇耳光、围殴、罚跪、把衣服拍照等,给受害人身心造成很大伤害。为避免此类事件的发生,正确的做法有( )