问题
选择题
1只“220V，40W”的灯泡L1和1只标有“110V，40W”的灯L2相比较[ ]
A、它们的额定功率相等
B、L1的额定功率比L2大
C、L2的额定功纺比L1大
D、它们的功率相等
答案
答案：A
搜题请搜索小程序“爱下问搜题”
1只“220V，40W”的灯泡L1和1只标有“110V，40W”的灯L2相比较[ ]
A、它们的额定功率相等
B、L1的额定功率比L2大
C、L2的额定功纺比L1大
D、它们的功率相等
答案：A
小题2: If we don’t deal with our problems, we can ___________ become unhappy. 小题3: Don’t _________! I’m sure we can come up with a good way. 小题4: The cup was used for _____________ in the old days in China. 小题5: We would like two _______________ of bread and some milk. |