【简答题】Directions:In this part, you will have 15 minutes to go over the passage quickly For questions 1-6, mark Y (for YES)if the statement agrees with the information given in the passage; N (for NO)if he s...
【简答题】下列套筒灌浆连接接头设计要求中,表述正确的是()。A. A、混凝土构件中灌浆套筒的净距不应小于 20mm。 B. 混凝土构件的灌浆套筒长度范围内,预制混凝土柱箍筋的混凝土保护层厚度不应小于 20mm,预制混凝土墙最外层钢筋的混凝土保护层厚度不应小于15mm。 C. 接头连接钢筋的强度等级不应高于灌浆套筒规定的连接钢筋强度等级。 D. 接头连接钢筋的直径规格不应大于灌浆套筒规定的连接钢筋直径规格, ...
【简答题】英译汉: Not all polymers are built up from bonding together a single kind of repeating unit.At the other extreme,protein molecules are polyamides in which n amino acid trpeat units are bonded together.Al...