1. 8093. Which is considered good practice concerning the installation of acrylic plastics? A. When nuts and bolts are used, the plastic should be installed hot and tightened to a firm fit before the plastic cools. B. When rivets are used, adequate spacer or other satisfactory means to prevent excessive tightening of the frame to the plastic should be provided. C. When rivets or nuts and bolts are used, slotted holes are not recommended.