【单选题】_____ the fact that his initial (开始的) experiments had failed, Pro. White persisted (坚持) in his research. [ ]
【单选题】It can be inferred from the passage that the statements in the last paragraph are most probably about______.
A.
Brown's elaboration of his research results
B.
Brown's tentative inferences from his data
C.
the author's criticisms of Fuchs' argument, based on Brown's results
D.
the author's conclusions, based on Fuchs's and Brown's results
【简答题】两台或以上的接收机同时对同一组卫星进行的观测,称为( )
【判断题】字段属性中的有效性规则属性能防止非法数据输入到表字段中。
【判断题】字段属性中的有效性规则属性能防止非法数据输入到表字段中。
【单选题】_______ the fact that his original experiments had failed, Pro. White stuck to his research.
【单选题】听力原文: Attention, ladies and gentlemen. Everyone at the Eglington Research Center is proud to present our final speaker, Dr. Hyun Jin Kim. Today Dr. Kim will be speaking to us about the latest developm...