问题
单项选择题
数控机床的精度检测指标中，以下不属于静态指标的是()。
A.机床滑板定位精度
B.测量精度
C.轮廓跟随精度
D.机床定位精度
答案
参考答案：C
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数控机床的精度检测指标中，以下不属于静态指标的是()。
A.机床滑板定位精度
B.测量精度
C.轮廓跟随精度
D.机床定位精度
参考答案：C
David is an 1._____ boy. He is only eleven years old. But He 2._____ in Beijing with his parents now. He doesn’t know Chinese. 3._____ his friends don’t understand 4._____ . One morning 5._____ 10 o’clock he went to the zoo to see 6._____with his dad. He 7._____ pandas very much. 8._____ they didn’t know 9._____ the zoo was . So David 50._____ a girl how to go to the zoo. But the girl 11._____ understand him. Then he drew a panda 12._____ a piece of paper, and 13._____ the picture to the girl. The girl told him the zoo was just 14.______from there. He 15_____ her very much.
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