PV cells [br] Ground-source heat pumpsA、are not yet available for domestic use.

游客2024-01-07 63

问题 PV cells [br] Ground-source heat pumps

选项 A、are not yet available for domestic use.
B、produce four times more energy than they use.
C、can save over ￡8000 a year.

答案 B

解析

转载请注明原文地址:https://www.tihaiku.com/zcyy/3341523.html

相关试题推荐

随机试题

最新回复(0)

Thetechniquesnowavailabletolivestockbreederswillcontinuetobe(i)______