腺垂体分为（）
A.前叶和后叶
B.前叶、中间部和后叶
C.远侧部、结节部和漏斗部
D.远侧部、结节部和中间部
E.远侧部和中间部
参考答案：D
I was afraid__________to my customers because I was afraid__________them.
A．of talking back；to lose
B．of talking back；of losing
C．to talk back；to lose
D．to talk back；of losing
30kW的X线机组，管电流的调节范围是
A．10mA～80mAB．10mA～100mAC．10mA～400mAD．10mA～300mAE．10mA～200mA
