未注公差尺寸的公差等级一般按照()执行。 ["IT6至IT7","IT10至IT13","IT12至IT18"]
佛教由印度在()传入中国。 ["公元前2世纪","公元前1世纪","公元1世纪","公元2世纪"]
京东在广告方面线上和线下的投放比例是()。 ["1:1","8:2","3:7","6:4"]
The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the (). ["quantity of fuel to be received","flash point of the fuel as it is received","fuel temperature as it is received","viscosity of the fuel being received"]
孙中山欲建立的中华民国的国家性质是()。 ["君主专制国家","民主共和国","人民民主专政的社会主义国家","君主立宪制国家"]
北美洲的矿藏分布同地质构造有什么关系?