【单选题】According to the passage, who are in a position to decide whether a witness testimony is reliable?
【单选题】( )是将总体各单位编上序号并将号码写在外形相同的纸片上掺合均匀后,再从中随机抽取,被抽中的号码所代表的单位,就是随机样本,直到预先规定的样本数目为止。
【简答题】作业标设在施工线路及其邻线距施工地点两端()处。
【单选题】作业标设在施工线路及其邻线距施工地点两端各()处。
【单选题】( )是将总体各单位编上序号并将号码写在外形相同的纸片上掺和均匀后,再从中随机抽取,被抽中的号码所代表的单位,就是随机样本,直到抽够预先规定的样本数目为止。
【单选题】According to the passage, in the competition for scientific leadership, ______.
A.
applied research is of the greatest significance
B.
basic research is of the greatest significance
C.
research in high-energy physics is of the greatest significance
D.
research in high-tech fields is of the greatest significance
【简答题】According to the author, competition differs from conflict in that ________. A) it results in war in most cases B) it induces efforts to expand territory C) it is kind of opposition among aria entitie...
【单选题】作业标设在施工线路及其邻线距施工地点两端各()m处。
【简答题】作业标设在施工线路及其邻线距施工地点两端( )米处。
【判断题】作业标设在施工线路及其邻线距施工地点两端800-1000m处。