将螺纹轴线竖直放置，螺旋线自左向右逐渐升高的是（）螺纹，连接螺纹大多是（）旋螺纹。
参考答案：右；右
After three days' talks, I began to wonder if they had reached any agreement or they needed to set another
date for a _____ one.[ ]
A. deeper
B. slower
C. further
D. higher
“洪堡式”大学的传统是由( )传承的。
A．柏林大学 B．剑桥大学C．巴黎大学 D．哈佛大学
