问题
问答题 简答题
什么叫辅助通风机？《煤矿安全规程》对安设使用辅助通风机有哪些规定？
答案
参考答案：
某分区通风阻力过大、主要通风机不能供给足够风量时，为了增加风量而在该分区使用的通风机叫做辅助通风机。
《煤矿安全规程》中规定，井下安装辅助通风机时，必须供给辅助通风机房新鲜风流，在辅助通风机停止运转期间，必须打开绕道风门。
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什么叫辅助通风机？《煤矿安全规程》对安设使用辅助通风机有哪些规定？
参考答案：
某分区通风阻力过大、主要通风机不能供给足够风量时，为了增加风量而在该分区使用的通风机叫做辅助通风机。
《煤矿安全规程》中规定，井下安装辅助通风机时，必须供给辅助通风机房新鲜风流，在辅助通风机停止运转期间，必须打开绕道风门。
| 阅读短文，还原句子，其中一项为多余选项。 When I was small, I was kind of shy. Fortunately, I changed a lot by junior high school. Shyness gets in the way of success, but it doesn't have to hold you back. Here are some tips that may help you overcome it. __1__ The excitement of being lost at something that you love can help you forget your nervousness while showing off in public. Next, why not get more chances to speak in public? For me, when l went into high school, I took speech classes. __2__ Then, don't think about what will happen. It's possible that you might be laughed at when speaking. __3__ What really happens is better than what we imagine. Finally, remember past successes. Whether it is making a successful speech, remembering past successes can help you to get future success. __4__ If you succeeded in the past, then you can succeed again! It's actually natural to be a little bit nervous about meeting new people, making cold calls, or giving a speech. That nervousness doesn't have to keep you from succeeding, though.
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缺失，间隙小，
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稳固，口腔卫生差，咬合关系正常。患者要求固定义齿修复。