【判断题】Query对象的uniqueResut()方法返回结果内容为对象或对象数组。
【单选题】C5~C11(40~200℃的馏分)是( ),可作为燃料,也可作为化工原料。
【判断题】Query对象的uniqueResut()方法返回结果数据总量为0到1条数据。
【判断题】C5~C11(40~200℃时的馏分)是煤油,可作为燃料,也可作为化工原料。
【简答题】Scientists declared that the discovery could not only _________ Einstein’s theory of relativity but also add to their understanding of the universe. (validate)
【简答题】Scientists declared that the discovery could not only ____ Einstein’s theory of relativity but also add to their understanding of the universe. (V)
【判断题】C5~C11(40~-200℃时的馏分)是汽油,可作为燃料,也可作为化工原料。
【单选题】抽水蓄能电站的综合效率系数,数值一般在()之间。
【简答题】Scientists declared that the discovery could not only Einstein’s theory of relativity but also add to their understanding of the universe.
【简答题】The scientists declared that there are only eight planets in the solar system.