当料腿内的催化剂静压超过(),翼阀自行打开。
A.旋风器的压降
B.翼阀上方床层静压
C.打开翼阀所需压力
D.旋风器的压降、翼阀上方床层静压、打开翼阀所需压力三者之和
参考答案:D
INDEPENDENT 独立写作 话题类别 生活类 考题文字: Do you agree or disagree with the following statement Young people today are more likely to help others than young people were in the past.Please use specific details and examples to support your opinion.
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