在一台换热器中,传热速率与热负荷的关系为()
A.传热速率=热负荷
B.传热速率≥热负荷
C.传热速率≤热负荷
D.互不相干
参考答案:B
— Jack, how are you feeling today?
— Much . I think I can go to school tomorrow.
A.better
B.worse
C.brighter
D.weaker
采猎二、三级保护野生药材物种的,首先必须取得( )。
A.合格证
B.许可证
C.采伐证
D.狩猎证
E.采药证