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问题 问答题 简答题

什么叫克劳斯工段热开工？

答案

参考答案：克劳斯工段的热开工是指工段临时停工后的开工，此时工段状态为：

①酸性气停止入反应炉；

②反应炉、第一、二在线炉、焚烧炉用瓦斯燃烧；

③反应炉，焚烧炉和克劳斯反应器温度符合工艺卡片要求；

④废热锅炉和硫冷凝器液位、压力符合工艺卡片要求；

⑤尾气旁路阀开，尾气入净化系统切断阀全关。

填空题

When you stop and think about your high school or college alma mater, were your experiences more positive or negative Do your feelings of (1) in that school have anything to do with whether or not your school was single-sex or coed (2) to send their children to single-sex schools, because they feel both (3) when they study in the company of students of the same sex. They (4) .
For years, only parents who could afford to send their children to private schools, or who had (5) , chose single-sex education for their children. Single-sex schooling was (6) for most American families. Today, however, along with (7) , public schools are experimenting with the idea of (8) .
Girls may be the ones who benefit most from single-sex schooling. Studies have shown that (9) in coed classrooms because teachers sometimes pay more attention to boys. Girls’ (10) toward their studies tends to disappear as they begin to feel less successful. They start to (11) outperform them in math and science. As boys (12) , girls start to lose it. Moreover, adolescence is (13) for girls. As they experience adolescent changes, some girls become depressed, develop an addiction, or suffer from (14) .
In the early 1990s, some influential people said that being in single-sex classes could (15) . Schools across the country began creating single-sex classrooms and schools. But many critics claim that (16) may actually be detrimental to a girl’s education because they (17) of sex differences.
The renewed interest in single-sex schooling (18) among Americans. Those who give it full endorsement believe girls need an all-female environment to take risks and find their own voices. Those who (19) of single-sex schooling wonder whether students’ lack of achievement warrants returning to an educational system that divides the sexes. They believe there is no (20) .
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单项选择题

液压油钢是液压系统中的（）机构。

A.动力；

B.执行；

C.控制；

D.辅助设备。
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