问题
问答题 简答题
支架大流量安全阀的作用是什么？
答案
参考答案：
大流量安全阀的作用是在工作面顶板来压极强烈时，使立柱活塞腔急速储存的能量迅速释放出来，避免立柱及支架部件的损坏。
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支架大流量安全阀的作用是什么？
参考答案：
大流量安全阀的作用是在工作面顶板来压极强烈时，使立柱活塞腔急速储存的能量迅速释放出来，避免立柱及支架部件的损坏。
Jack ___1___in Canada. His father___2___a big shop and his mother is a teacher. He is six years old and ___3___to go to school this year. It’s ___4___far from their home, and his father drives a car to take him to school every day. So he is never late___5___ class and his teachers like him very much. . It’s Monday today. Miss White is teaching them to count numbers from one ___6___ten. Jack studies very hard. Soon he can count them. Miss White is happy and asks “How ___7___ people are there in your family, Jack?” Jack___8___ up and says “Two, Miss White.” “Who are ___9___?” “My father and my mother.” Says Jack. “Oh?” Miss White says “There are three people in your family, not two.” “But now I’m not at home. I’m at ___10___, you know!” 小题1:A live B. lives C. is live D. living
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