A.Shift+Delete B.Alt+Delete C.Ctrl+Delete D.Shift+Ctrl+I
A.Shift+Delete B.Alt+Delete C.Ctrl+Delete D.Enter
A.輪廓線不規(guī)則,自然生動 B.造型規(guī)則 C.輪廓線平滑 D.造型簡潔歸納