当采用主轴进给镗削时,所镗孔不仅存在圆度误差,而且会产生()误差。
A.直线度
B.圆柱度
C.锥度
D.平行度
参考答案:D
How do you read 15,847?
A.fifteen thousand, eight hundred and forty-seven
B.fifteen thousands, eight hundreds and forty seven
C.fifteen thousand, eight hundred and forty seven
D.fifteen thousand and eight hundred and forty-seven
我市翰林苑小区3号楼的实际高度是28米,它的高度与模型高度的比是400:1,模型的高度是多少厘米?