下列各组向量中不平行的是( )
A:a→=(1,2,−2),b→=(−2,−4,4)
B:c→=(1,0,0),d→=(−3,0,0)
C:e→=(2,3,0),f→=(0,0,0)
D:g→=(−2,3,5),h→=(16,24,40)
I'd like to take this _________ to thank all of you for your hard work on this project.
根据首字母填写单词。