信号过电压保护装置中元件主要有：（）等。
参考答案：气体放电管、压敏电阻、雪崩二极管、抑制晶闸管
I have ____ Tony to stay away from computer games before he becomes addicted to them.
A．urged
B．suggested
C．made
D．kept
新生血管性青光眼( )
A．Marfan综合征B．溶血性青光征C．青光眼睫状体炎综合征D．广泛视网膜缺血所致青光眼E．虹膜角膜内皮综合征
