一个重为8N的物体,挂在弹簧测力计下,将它浸没在盛满水的溢水杯中,静止时弹簧测力计的示数为6N,则物体所受的浮力是 N,溢出水所受的重力为 N.
2;2
绒毛滋养细胞 * * 转移形成()。
A.卵巢黄素囊肿
B.卵巢黄体囊肿
C.葡萄胎
D.侵蚀性葡萄胎
E.紫蓝色结节
The manager commanded that the work ____ finished by the end of this month.
A.should be
B.will be
C.must be
D.ought to be