1.What effect does ultraviolet (UV) exposure have on black pond liner material?
1.紫外线（UV）照射对黑色池塘防水膜有什么影响？
2.What is the minimum acceptable thickness for a concrete slab?
2.混凝土板可接受的最小厚度是多少？
3.What type of soil is best for backfilling a 12-inch trench?
3.回填 12 英寸深沟槽时，最理想的土壤类型是？
4.In grading and landscape projects, what is the function of a straw-filled wattle?
4.在整地和景观工程中，填充稻草的挡水卷（wattle）有什么作用？
5.What type of pipe is installed for drainage behind retaining walls?
5.挡土墙背后通常安装哪种排水管？
6.If a deck floor sits 10 feet above grade, what is the minimum post size required?
6.若露台地板高出地面 10 英尺，最小立柱尺寸是多少？
7.What additive should be used in concrete during hot, sunny conditions?
7.在炎热、阳光强烈条件下浇筑混凝土应添加什么外加剂？
8.A “rich” concrete mix consists of:
8.“富配比”混凝土是指：
9.What are the actual dimensions of S4S 1×4 lumber?
9.S4S 1×4 木材的实际尺寸是？
10.What structural fastener secures a deck ledger to a building’s rim joist?
10.哪种结构紧固件用于将露台主梁固定到建筑物边梁上？
