题目内容
(请给出正确答案)
[主观题]
We must be very careful as the scheme is so designed that once _____ nothing can be done to abort it. ()
A.being launched
B.launched
C.launching
D.having launched
提问人:网友lixin080108
发布时间:2022-01-07
A.being launched
B.launched
C.launching
D.having launched
此题为判断题(对,错)。
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