已知一电炉电炉丝电阻为10Ω，将其接在220V的电路上，每小时发热量是多少？如将其接在380V的电路上，每小时发热量是多少？
参考答案：
Nearly three days after an 8.8-magnitude earthquake, rescuers in Chile were making every effort to _______ possible survivors.
A．trap
B．reach
C．shelter
D．seize
与经纪业务相比较，自营业务在交易行为上具有非自主性。（）
in Chile were making every effort to _______ possible survivors.