误读率最小的仪表表面和刻度的配色哪对最佳()。
A.黑和白
B.白和黑
C.墨绿和白
D.深蓝和白
参考答案:C
Don't throw the paper away. I'm going to _______ it and use it again.[ ]
A. make
B. move
C. send
D. save
什么叫尺寸偏差?