蚌埠市某天的天气情况如图( )
A:多云转晴 西北风八级
B:多云转晴 西北风七级
C:阴转多云 西北风八级
D:阴转多云 西北风七级
甲乙两车间某天共生产零件1200个,其中甲车间比乙车间多生产了160个,甲车间生产了____ 个,乙车间生产了____ 个.
如图所示,将灯L1、L2按甲、乙两种方式接在电压均为U的两个电路中。L1在甲、乙两个电路中的电功率分别为4W和9W,设两灯泡的电阻不变,则L1、L2两灯泡电阻之比为____。
A:Hello,Tom.
B:Hi,Jenny. How do you feel?
A:I feel happy. Look! This is my sister(妹妹).
B:What's her name?
A:Her name is Kate.
B:What colour is her hair?
A:Her hair is black.
B:What colour are her eyes?
A:They are blue.
B:How nice(漂亮的)!