海带食物富含微量元素碘?
在Java语言中,你创建了一个Applet, playAudio.java 来播放123.au文件,123.au在myAudio目录中,myAudio和playAudio.java在同一目录,你要使用()语句 ["play(getDocumentBase(),”myAudio\/123.au”)","play(getDocumentBase(),” 123.au”)","play(getCodeBase(),”myAudio\/123.au”)","play(getCodeBase(),” 123.au”)"]
在炉窑烟道上安装氧化锆分析仪的作用是()。 ["节能","减少环境污染","延长炉龄","提高炉子热效率"]
造成基础工程回填土密实度达不到要求的原因有()。 ["土的含水率过大或过小","基坑(槽)开挖坡度不够","填方土料不符合要求","土质松软","碾压或夯实机具能量不够"]
鲤鱼有土腥味,初加工时要将()去除。 ["腥线","鱼骨","鱼肉","鱼鳞"]
微生物处理