A:灯泡与电阻消耗的总功率为110W
B:灯泡与电阻消耗的总功率为100W
C:灯泡消耗的功率小于90W
D:灯泡消耗的功率大于90W
太阳直射某地的那一日,下列叙述正确的是( )
With the loss of labor,the old farmers ________at home had to choose less laborintensive crops.