一个圆柱形玻璃容器的底面直径是8厘米,把一块石头浸没在水中,水面上升4厘米,这块石头的体积是多少?

羊适宜的输配时间应在什么时候？

Which of the following is correct about this passage？

A．Some offensive breath can"t easily be cured.

B．Heavy drinkers are less affected by bad breath.

C．Elderly people are less affected by bad breath.

D．Offensive breath is less affected by alcohol.

请帮忙给出正确答案和分析，谢谢！

下列各项中，除何药外均是温胆汤的组成药物()

A、半夏

B、枳实

C、茯苓

D、竹叶

E、甘草

请帮忙给出正确答案和分析，谢谢！

试述影响奶山羊产奶量的因素。

简述提高奶山羊经济效益的方法。