【Daily Question】When was the world’s first fixed-bed catalytic cracking unit built? July 10th
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This post was last edited by wt2008 on 2015-7-10 at 17:30. Daily question for the activity (single-choice question): The world’s first fixed-bed catalytic cracking unit was built in ( ). A、1932 B、1938 C、1965 Answer: B、1938. Please participate actively to win prizes. +5 points for correct answers, +2 points for participation. One time per person only. Close this topic in two days.
The world’s first fixed-bed catalytic cracking unit was built in (B). A、1932 B、1938 C、1965
B, 1938 – I think it was 1938; in our country it was 1965!
The world’s first fixed-bed catalytic cracking unit was built in (B). A、1932 B、1938 C、1965
The world’s first fixed-bed catalytic cracking unit was built in (B). A、1932 B、1938 C、1965
The world’s first fixed-bed catalytic cracking unit was built in (B). A、1932 B、1938 C、1965
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