以下哪种节能技术是通过引入室外冷源进行节能的?()
A、机房精确送风
B、空调智能节电器
C、新风冷气机(水帘新风)
D、高压直流
参考答案:C
----The boss said we had only three days to finish the task.
----No problem. We have already _________ two thirds of it.
A.got over
B.given away
C.got through
D.made out
通常使养殖水体有机物过多的原因不包括()
A.淤泥过多
B.残饵过多
C.鱼类排泄物
D.死亡的鱼类