set2={1,2,3}set2.add(5)=set2.remove(1)=set2.discard(1)=len(set2)=2 in set2=2 not in set2=set6=set2.copy(); set6=set2.clear();set2=

2022-06-06

答案：

{1,2,3,5}# {2,3,5}# {2,3,5}# 3# True# False# {2,3,5}# 空集合

0
以下关于es6中set数据结构，运行结果正确的是（） A: letset=newSet（[1，2，2，2，3]）；//Set（2）{1，2，3} B: letarr1=[1，2，3，4]letarr2=[2，3，4，5]letset=newSet（[...arr1，...arr2]）；//Set{1，2，3，4，5} C: letset1=newSet（）set1.add（1）set1.add（2）console.log（set1）//{1，2，3} D: varset1=newSet（）；set1.add（1）set1.add（2）set1.delete（1）console.log（set1）//{2}
1
已知x = [1, 2, 3],那么表达式not (set(x*100)-set(x))的值为________________。
2
If the CIF price of a product is USD100/set, freight charge USD10/set, insurance premium USD 10/set, commission rate 2%, the commission payment based on CIF price should be ( ) A: USD1.60/set B: USD1.63/set C: USD2.00/set D: USD2.04/set
3
表达式 set([1,2, 2,3]) == {1, 2, 3} 的值为 ____________ 。
4
The central knob of digital multimeter has several positions. To measure DC/AC voltage,set the multimeter to 1 . To measure rcsistance, set the multimeter to 2 . Tomeasure small current, set the multimeter to 3 . To measure large current, set the multi-meter to 4 ：