A:重庆冬天的室外气温平均为37℃
B:家用白炽灯泡正常工作电流略为0.2A
C:家用电冰箱正常工作时的电功率略为1000W
下列物质中,属于合成材料的是( )
下列图片中能够证明大气压强存在的是( )
—________ great fun we had at the party last night!
—Yes, it was so exciting that everyone was happy.