第8题: [多项选择]采煤质量标准化对液压支架的要求,下面正确的是¬哪些?() A. 初撑力不低于规定值的70% B. 支架要排成一条直线,其偏差不超过±100mm。中心距按作业规程要求,偏差不超过±50mm C. 支架顶梁与顶板平行支设,其最大仰俯角﹤7。 D. 相邻支架间不能有明显错差(不超过顶梁侧护板高的2/3),支架不挤、不咬,架间空隙不超过200mm 参考答案:C, D
第10题: [单项选择]Questions 23 to 25 are based on the conversation you have just heard. A. Interviews. B. Television ads. C. Playing with children. D. Speeches. 参考答案:C 答案解析:[听力原文] Which of the following is NOT mentioned as a means of running for President