如果x=3×3×5,y=2×3×5×7,那么x和y,的最大公因数是( ),最小公倍数是( )。
15;630
Why not describe what you saw that day___? It will surely help the police to find out who were to blame for the terrible accident.
A.in order
B.in return
C.in detail
D.in charge
新航路的开辟引起“价格革命”。“价格革命”的作用不包括
A.加速社会分化
B.加速西欧封建制度的解体
C.促进资本主义生产关系进一步演变
D.使西欧市场金银升值