【单选题】目前,我国商业银行最主要的资金来源是( )。
【判断题】母牛镁的维持需要量为2~2.5 g/d·头,每产1 kg 奶另加0.12 g 镁。
【判断题】在现代旅游服务体系中,导游服务居于支配地位,统领其也工作。
【简答题】&8226;You work in an import and export company. Your department manager has asked you to write a reply letter concerning wrong delivery. He has written his comments on the letter. &8226;Read the lette...
【判断题】除全胶管外各种胶管的基本结构都是由内胶层、强力层和外胶层构成。胶管规格表示方法通常以内直径、骨架层层数、长度及耐压程度(工作压力)来表示。()