题目内容

14.

A. They could knock people unconscious
B. They could fly against a strong wind.
C. They could sometimes terrify adults.
D. They could break people's legs.

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15.

A. One would have curly hair if they ate too much stale bread.
B. One would go to prison if they put a stamp on upside down.
C. One would have to shave their head to remove a bat in their hair.
D. One would get a spot on their tongues if they told a lie deliberately.

G51 X Y Z I J K 是什么指令

A. 镜像
B. 缩放
C. 旋转
D. 铣整圆

G51.1 X0表示什么意思?

A. 关于原点对称
B. 关于X轴对称
C. 关于Y轴对称

取消关于Y轴镜像的指令是?

A. G51.1 X0 Y0
B. G51.1 X0
C. G50.1 X0 Y0
D. G50.1 Y0

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