—At ten o'clock.
A:where you have your English lesson
B:where do you have your English lesson
C:what time you have your English lesson
D:what time do you have your English lesson
请根据表中数据,归纳出电压U与电流I的关系式:____ 。
纬线指示南北方向.
填上适当的名称.
____×____ =路程