第11题: [多项选择]压力容器在运行中出现( ),应立即停止运行。 A. 容器的操作压力或壁温超过安全操作规程规定的极限值,而且采取措施仍无法控制,并有继续恶化的趋势 B. 容器的承压部件出现裂纹、鼓包变形、焊缝或可拆连接处泄漏等危及容器安全的迹象 C. 安全装置部分失效 D. 操作岗位发生火灾,威胁到容器的安全操作 E. 高压容器的信号孔或警报孔泄漏 参考答案:A,B,D,E
第33题: [单项选择]Why did wool to be the second woven material for clothes A. Sheep can be raised easily and can live in varied climates. B. Linen was difficult to produce. C. People liked to wear wool. D. Fine linen only could be worn by rich people. 参考答案:A 答案解析:[解析] 从文章最后一段第一句可知答案应选A。