家用白炽灯上标有“220V 40W”字样。当该灯正常工作时，它的功_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

家用白炽灯上标有“220V 40W”字样。当该灯正常工作时，它的功率 [ ]

A 大于40W

B 小于40W

C 等于40W

D 等于220W

答案

答案：C

单项选择题

Not much people realize that apples have been cultivated for over 3,000 years.

A．Not many

B．Not enough

C．Without many

D．No many

单项选择题 A1型题

诊断新生儿轻度贫血的标准是（）

A.144～120g/L

B.121～100g/L

C.10～90g/L

D.100～90g/L

E.140-110g/L