二十世纪中国美育的历史使命体现在（）方面。
胡锦涛同志在党的十七大报告中郑重指出（）是凝聚党心民心的巨大力量。 ["优良的党风","执政能力","人民群众","各级领导干部"]
Which path selection protocol is used by Fibre Channel fabrics？（） [" IVR"," VoQ"," FSPF"," VSANs"," SANTa"]
低于（）HZ或高于20KHZ的声波不能被人耳感受器官所感知，分别称为次声波和超声波。 ["20","10","18","50"]
瓷横担的弯曲度不应大于（）。 ["1%","2%","3%","4%"]
下列方法中属于美育方法之一的是（）。
