膨胀干燥机入料口水较多时应立即（），使孔眼流水畅通。
参考答案：清理滤水板
No organ of the body is less appreciated than the skin.
A．understand with sympathy
B．enjoyed
C．acknowledged
D．set high value on
放牧家畜的饭刍实践长短与事物中（）和（）含量有关。
