在催化裂化过程中，导致干气中氢气含量增加的因素是（）。
A.催化剂积炭
B.催化剂沉积金属
C.催化剂水热稳定性变差
D.催化剤跑损
参考答案：B
补全对话。从对话后的选项中选出能填入空白处的最佳答案。
Jack: Hi, Michael, 1
Michael: Not too bad.
Jack: Well, the term exam is always more difficult, 2 You’ll do better next time.
Michael: But I’ve never done well in the math exam.
Jack: Come on, Michael! Let’s talk about football match tonight. It is much more interesting.
Michael: 3
Jack: It’s between the Chinese team and the Japanese team.
Michael: Er…___4_____
Jack: Why? Everybody knows you are a football fan.
Michael: The Chinese team has always played badly in the important matches, just as I have done in the important exams.
Jack: Well, I think the team is making good progress. 5
下列选项中，不属于施工作业人员安全生产的权利的是（）
A.知情权
B.建议权
C.批评权
D.危险报告权
