How to view csv files

May I know why the csv file of the audio file feature extracted by mfcc can't be opened, what is its encoding method and how can I view this file? 我的命令为
$ SMILExtract -C /data/opensmile/config/mfcc/MFCC12_0_D_A_Z.conf -I /data/04/04-A-/wav/train/04/output_10.wav -O 04sc.csv