属于非接触性检查的是（）
A.眼部超声
B.UBM
C.Goldmann眼压测量
D.眼前节OCT
E.三面镜检查
参考答案：D
32. The poor boy said he often went ______ and sometimes almost starved______ in the old days.
A．hungry; deadly
B．hunger; death
C．hungry; to death
D．hunger; dead
卫星通信系统中FEC指的是（）。
A.跳频
B.频率调制
C.场效应晶体管
D.前向纠错
