【单选题】When was Harvard University established?( )
【简答题】A.1720~1705cm-1 B.1742~1735cm-1 C.1684~1620cm-1 D.1230~1000cm-1 E.1300~1200cm-1 酚羟基的伸缩振动(νC=O)
【简答题】On December 18, 1620, passengers on the British ship Mayflower came on shore at modern – day Plymouth, Massachusetts, to begin their new settlement, Plymouth Colony. The famous Mayflower story began i...
【简答题】A.At 1:00. B.After 1: 15. C.After 12: 15. D.Before 12:00.
【简答题】选择:甲说:“我乘18得 90” 。 甲 = ( ) A . 5 B . 90 C . 1620
【单选题】Christopher Columbus discovered the North American continent in __________ .
【简答题】由108×15=1620,我们可以直接得出10.8×0.15=______.
【简答题】下面各题怎样简便就怎样算 (1)3618÷45+1620= (2)( - )×36= (3)23- - = (4) × ÷ = (5) ×(0.4+ )= (6) ÷( +2.5× )=
【简答题】填一填. 6 8 = () 4 9 18 = 1 () 18 15 = 6 () 16 20 = () 5 6 15 = 2 () 1000 1000 = 1 () .