购电器产品时,最好选什么标志()A、最好选“CCC”标志B、“BBB”标志C、“AAA”标志D、“DDD”标志
购电器产品时,最好选什么标志()
A、最好选“CCC”标志
B、“BBB”标志
C、“AAA”标志
D、“DDD”标志
相关考题:
能实现将一维数据写入CSV文件中的是()A.fo = open("price2016bj.csv", "r") ls = ['AAA, 'BBB', 'CCC', 'DDD'] fo.write(",".join(ls)+"n") fo.close()B.fname = input("请输入要写入的文件:") fo = open(fname, "w+") ls = ['AAA, 'BBB', 'CCC', 'DDD'] for line in fo: print(line) fo.close()C.fo = open("price2016bj.csv", "w") ls = ['AAA, 'BBB', 'CCC', 'DDD'] fo.write(",".join(ls)+"n") fo.close()D.fr = open("price2016.csv", "w") ls = ['AAA, 'BBB', 'CCC', 'DDD'] for line in fo: line