在Windows操作系统中,将视觉效果的属性设置为“调整为最佳性能”,此时计算机运行速度相对较快。()
参考答案:对
一 Yao Ming had to give up the rest of the season because of his broken leg.
一 _____[ ]
A. He was so careless.
B. Never mind.
C. That's all right.
D. What a pity!
将标有“6V 4W”的灯泡L接入电压恒为6V的电路中,若要让电路中的总功率变为16W,则下列方法可行的是[ ]
A、与灯泡L串联一个“6V 12W”的灯泡
B、与灯泡L并联一个“6V 12W”的灯泡
C、与灯泡L串联一个“6V 4W”的灯泡
D、与灯泡L并联一个“6V 4W”的灯泡