【简答题】高频谐振功率放大器有哪几种工作状态,分别实现何种功能时应用?
【简答题】The meaning is still obscure.
【单选题】His writing is so______, obscure, and overwrought that it is difficult to make out what he is trying to say.
【简答题】写出He,F,Si,K,Ag,Hg的元素名称。
【简答题】He is too good a player to slide into _____. (obscure)