局内各类接地线应从()上面分别引入。 ["接地汇集线","中性线","接地网","BGND","电源线","用户线"]
艺术摄影
现有: import java.util.*; class ScanStuff { public static void main (String [] args) { String S= "x,yy,123"; Scanner sc = new Scanner (s); while (sc.hasNext()) System.out.print (sc.next() +" "); } } 结果是什么?() [" x yy"," x,yy,123"," x yy 123"," x,yy","编译失败","运行的时候有异常抛出"]
把地中海与大西洋连接起来的海峡是() ["马六甲海峡","白令海峡","麦哲伦海峡","直布罗陀海峡"]
以结构形式为标准,问卷法可划分为()、()两种类型。
苏丹目前有四种学前教育机构,其中历史最为悠久的是()