Britain’s longest rivers are(). ["the Severn and the Clyde","the Thames and the Clyde","the Clyde and the Humber","the Severn and the Thame"]
简述主体运动的速度和动作轴线的关系。
下列各种爆炸属物理爆炸的是()。 ["核弹","液化气","瓦斯气","蒸汽锅炉"]
环压强度
目前广泛应用的Internet的基础协议是() ["ARP","X.25","SMTP","TCP\/IP"]
有人说“马”是意符,有人说“马”是音符?请谈谈你的看法。