题目内容

It was early and George had time to spare before the train left (para.7)To have time to spare means to have time to share

A. 对
B. 错

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In his imagination, wasn’t he already there? (para.9)In his imagination, he already knew what it(city) was like.

A. 对
B. 错

下面主轴控制功能中,不需要主轴实现位置控制的有( )

A. 恒线速切削控制
B. 主轴定位控制
C. 主轴换挡控制
D. 刚性攻螺纹控制

()主轴准停装置的作用是当主轴停止时,控制其停于固定的位置,这是自动换刀所必需的功能

A. 对
B. 错

()FANUC 0i系列主轴模块JYA2连接到主轴位置编码器, 实现主轴位置的控制

A. 对
B. 错