哺乳母猪无乳或乳量不足,不属于营养导致的原因是( )。
A. 母猪妊娠期间能量过高或过低
B. 日粮中严重缺钙、缺磷
C. 高温、高湿的环境应激
D. 饮水不足
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There is only one type of notice: written form.
A. 对
B. 错
The written notice can be divided into two types: announcement and epistle.
A. 对
B. 错
People write notices to tell what is about to happen or what has happened.
A. 对
B. 错