- Tom, I'll invite you to have ______ lunch after playing ______ violin.
- Thank you.
A:a; the
B:the; the
C:/; /
D:/; the
情境题
方程x2﹣y2=0表示的图形是( )
如图所示几何体的左视图是( )
如图所示,电源电压为12V,用笔画线代替导线,将图中元件连接成电路,要求:电压表测量灯泡两端的电压,当滑动变阻器的滑片向左移动时,灯泡变亮。