【单选题】what is the historical remaining issue that became the original sin of the united states?
A.
the issue of representation in congress
C.
fortifying the congress
【单选题】what is the historical remaining issue of the constitution that became the original sin of the united states?
B.
the issue of representation in congress
C.
fortifying the congress
【简答题】某炼铁厂的铁水每炉含碳量在正常情况下服从正态分布N(4.55,0.108 2 ),现在抽测5炉铁水,含碳量分别是 4.38 4.45 4.47 4.52 4.50 假如方差没有变化,问在显著性水平α=0.05下所炼铁水的平均含碳量是否有显著变化?
【判断题】归档工程文件应采用耐久性强的书写材料,如碳素墨水,不得使用易褪色的书写材料,如红色墨水、纯蓝墨水、圆珠笔、复写纸、铅笔等。
【单选题】In the following sentence “ It was stained by this nation’s original sin of slavery”, what rhetorical device is used?
【单选题】工程文件应采用耐久性强的书写材料,不得使用易褪色的书写材料,下列可作为工程文件书写材料的是( )。