__________Lei Feng is no longer living, his spirit lives on today.
A:If
B:When
C:Although
D:Because
唐朝堪称世界工艺珍品的陶瓷制品是( )
下列说法中正确的是( )
如图甲所示,闭合开关S后,两相同电压表的指针偏转都如图乙所示,则L1和L2两灯的电阻之比为()