沉井的刃脚在吊放时可根据提吊设备的能力，采用（）。
A.整体吊放
B.分割吊放
C.分段吊放
参考答案：A, B
All the attention of the fans________the China's Nationwide Youth Singing Competition these days.[ ]
A．has concentrated to
B．was paid to
C．has been focused on
D．was fixed up
胃癌的好发部位是
A．胃小弯
B．胃大弯
C．胃底
D．贲门
E．胃窦部
