1.When fabricating a rain lip on an exterior, exposed raceway, where should the rain lip be positioned?
1.在制作户外暴露式 Raceway（线槽）上的防雨边（Rain Lip）时，防雨边应安装在哪里？
2.Which combination of materials is recommended for fabricating metal box signs?
2.制作金属箱体招牌（Metal Box Signs）时，推荐使用哪种材料组合？
3.What is the recommended angle for channel cross-bracing when installing an upright sign?
3.安装立式招牌（Upright Sign）时，槽钢或槽形构件的交叉支撑（Cross-Bracing）推荐采用多少度的角度？
4.Among the following 18-inch letters, which is generally the most difficult to form using glass tubing?
4.在以下高度均为 18 英寸的字母中，哪一个通常最难使用玻璃灯管制作成型？
5.What is the most effective method for preventing light leakage from a sign assembly?
5.防止招牌组件漏光最有效的方法是什么？
6.Which statement correctly describes the construction of a typical box sign?
6.以下哪项正确描述了典型箱体招牌（Box Sign）的结构？
7.Which of the following is NOT a standard requirement or characteristic of drain openings in signs?
7.以下哪一项不是招牌排水开口（Drain Openings）的标准要求或特征？
8.During the fabrication of a large metal sign box, what is commonly used to provide additional structural rigidity?
8.制作大型金属招牌箱体时，通常使用什么来提供额外的结构刚度？
9.Which requirement represents proper glass-bending practice for neon tubing?
9.以下哪项符合霓虹灯管正确的玻璃弯曲加工要求？
10.What is the name of the additional glass tube attached to a fabricated neon tube to allow air to be evacuated during processing?
10.在制作好的霓虹灯管上附加一段额外的玻璃管，用于加工过程中排出空气，这段玻璃管叫什么？
