伊斯兰教的标志是____,____的标志是十字架。
废弃的定影液中含有一定量的AgNO3,某课外活动小组从摄影店收集到一些废弃的定影液,准备将其中的银以单质形式全部回收.他们设计了如下的实验方案:
— The cars made in Germany are more expensive than ________ made in Japan.
— Yes, I can't agree more. But they're much better.
若fx为奇函数且在0,+∞上递增,又f2=0,则fx-f-xx>0的解集是( )