圆锥的底面是______形．
根据圆锥的特征知，圆锥的底面是一个圆形，
故答案为：圆．
属于电子扫描探头的是（）
A.线阵探头、扇形扫描探头、环阵扇扫探头
B.线阵探头、凸阵探头、相控阵探头
C.凸阵探头、旋转式扫描探头、相控阵探头
D.旋转式扫描探头、线阵探头、凸阵探头
E.环阵扇扫探头、相控阵探头、凸阵探头
用some或any填空。
1. They have got______ pictures.
2. My parents haven't got ______ rice.
3. Has she got ______ brothers or sisters?
4. They haven't got ______ beef.
5. Would you like ______ orange juice, Mary?
