【单选题】var arr = new Array(5); console.log( arr.length );该程序的结果为( )。
【简答题】The small child was not old enough to ________ him self.
【单选题】var arr = new Array(4); arr[4]="myname”; 则alert(arr.length)的结果是什么";
【简答题】var arr = new Array(9); arr[0]=1; arr[2]=2; 该数组的length属性值为( )
【单选题】分析下面的代码,输出的结果是( ) var arr=new Array(5); arr[1]=1; arr[5]=2;
【单选题】The child is too small to dress ______.
【简答题】Judging by the handwriting,the letter must have been written by a small child.
【单选题】BM运营模式下,首端车载信标天线故障时,列车失去定位,并实施紧急制动。紧急制动缓解后,列车只能以( )模式运行()。