Which of the four choices can substitute the underlined clause in the following sentence?In this work, our objective was to improve the carbon fiber performance significantly by utilizing very high molecular weight polymer so that high quality precursors can be produced.
选项:
A:producing high quality precursors;
B:to produce high quality precursors;
C:so that produce high quality precursors;
D:produced high quality precursors
发布时间:2024-03-28 14:47:52