【判断题】水中溶氧量是水生生物最重要的限制因素之一。
【单选题】What happened when the author went into the station to pay the gas?
A.
He was sick seriously.
B.
The attendant told me the truth about my yellow skin.
C.
The light reflecting off the walls made everyone inside looked as though they had haptatitis.
D.
The conversation didn't change the author's attitude.
【判断题】水中溶氧量是水生生物最重要的限制因素之一。判断对错
【判断题】水中溶氧量是水生生物最重要的限制因素之一。
【简答题】怎样计算直齿圆柱齿传动的圆周力、径向力?
【判断题】水中溶氧量是水生生物最重要的限制因素之一