普通内螺纹大径的基本尺寸要比外外螺纹大径的基本尺寸略大些。
A. 正确
B. 错误
以下哪一个属于针对网格的修改器()
A. Cross-section
Bevel
C. Edits pline
D. Edit mesh
Charted depth is the().
A. vertical distance from the tidal datum to the ocean bottom plus the height of the tide
B. vertical distance from the tidal datum to the ocean bottom
C. average height of water over a specified period of time
D. average height of all low waters at a place
有人把海洋监测浮标称为“无人浮标站”,它的最大优势是什么?