In plane figure, what kind of line type is used to show the symmetric line（）
A. Thin centerline
B. Thick hidden line
C. Thin phantom line
D. Thin break line
查看答案
What orientations can be shown on projection plane H（）
A. Right and left
B. Front and rear
C. Up and down
D. None
Which of the following statements is true about the inclined lines（）
A. Only parallel to one projection plane
B. Only inclined to two projection planes
C. Perpendicular to one projection plane
D. Inclined to one projection plane
What orientations can be shown on projection plane V（）
A. Right and left
B. Up and down
C. Front and rear
D. None
What kind of line types are used to represent visible outlines（）
A. Continuous thick line
B. Continuous thin line
C. Thin hidden lines
D. Center line
微信支付 
支付宝支付