问题
判断题
加工中心的自动测量属于机内测量,能补偿机床、刀具的热变形及工件的安装 误差。
答案
参考答案:对
加工中心的自动测量属于机内测量,能补偿机床、刀具的热变形及工件的安装 误差。
参考答案:对
阅读理解。 | ||||||
China's Manned Space Program
| ||||||
1.The Chinese spaceman traveling in space in the autumn of 2003 is _ . | ||||||
A.Yang Liwei | ||||||
2.Before China, How many countries had already sent their spacemen into space? | ||||||
A.Only one. | ||||||
3.It took Yang Liwei _ in Shenzhou V to circle the earth in space. | ||||||
A.one day B.two days C.three days D.fourteen days | ||||||
4.During the second stage,Chinese spacemen stayed in space for ___ . | ||||||
A.one day B.four days C.five days D.fourteen days | ||||||
5.Chinese spacemen will possibly walk on the moon around __ . | ||||||
A.2007 B.2008 C.2010 D.2017 |