【判断题】
可燃气体或蒸气与空气的混合物，若其浓度在爆炸下限以下或爆炸上限以上时便不会着火或爆炸。正确答案、
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相关试题
【判断题】
对制冷系统水换热器倒空，应待系统泄压完毕后立即停止水循环，及时将水倒空，防止水窜入冷系统。正确答案、
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安全带使用两年后，按批量购入情况抽验一次。正确答案、
【判断题】
生产单位应当组织有关专家对本部门编制的应急预案进行审定。必要时可以召开听证会，听取社会有关方面的意见
【判断题】
在管线法兰连接处通常将螺帽与螺母用铁丝连接起来，目的是导出静电。正确答案、
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滤毒罐分大、中、小三种形式，分别用于毒气体积浓度不大于2%、1%、0.5%的场合。正确答案、
【判断题】
乙烯制冷压缩机系统实气置换时，应注意机体充压、泄压缓慢进行，防止压缩机密封系统有大的波动。正确答案、
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裂解气压缩机在开车升速过程中，可以在临界转速区域长时间停留
【判断题】
压缩机透平两端吹氮气的目的是防爆，起到安全的作用。同时也可提高两端轴承的温度
【判断题】
正常运行时，在冷箱进出口安装精密压力表定期监测。当压差増大到一定程度时，即需要将冷箱切出清理滤网，或者需要注入甲醇等物质解冻。正确答案、
【判断题】
乙烯装置所用助剂二甲基二硫为无色或微黄色液体，接触后可引起头痛、恶心和呕吐。正确答案、
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煤块在常温下不易着火，更不易发生爆炸。因此煤矿开采和加工一般不用防爆
【判断题】
生产过程中发现设备泄漏应及时进行消漏，以减少无组织排放。正确答案、
【判断题】
应急预案应当包括应急组织机构和人员的联系方式、应急物资備备清单等附件信息。附件信息应当经常更新、确保信息准确有效
【判断题】
人身中毒的途径为呼吸道、消化道、皮肤。正确答案、
【判断题】
在应急管理中，恢复阶段的目标是尽可能地抢救受害人员，保护可能受威胁的人群，尽可能控制并消除事故
【判断题】
硫化氢在空气中的允许浓度为20 mg/m
【判断题】
急冷油粘度过高会造成降低急冷油的传热系数，増加急冷油循环泵的功率，并有可能阻塞管线及设备。正确答案、
【判断题】
裂解炉二次注汽技术的应用主要目的是防止原料在对流段加热汽化过程中结焦。正确答案、
【判断题】
应急响应即事故发生后有关组织或人员采取的应急行动。正确答案、
【判断题】
在制作某些器具的时候，可以随意切割盛装化学品的空桶
【判断题】
毒物主要通过呼吸道进入人体。正确答案、
【判断题】
汽包液位不能太高，否则会将水帯入过热炉管中，造成热循环。若水帯入太多，还会造成炉管的机械损坏或故障
【判断题】
一切电气设备的金属外壳接地是避免人身触电的保护接地。正确答案、
【判断题】
登高作业所使用工具应采取防脱落措施。正确答案、
【判断题】
无组织排放是指大气污染物不经过排气筒的无规则排放。正确答案、
【判断题】
为减少无组织排放，应定期对生产现场密封点进行检查、检测，及时消除物料泄漏。正确答案、
【判断题】
所有的废催化剂在卸出之前都应经充分的吹扫、置换。正确答案、
【判断题】
安全阀是一种由进口静压开启的自动泄压装置，防止容器超压。当容器内压力超过某一值时，阀门依靠介质自身压力自动幵启，迅速排除一定数量的介质。但是当容器内压力降低到允许值时，阀门不会自动关闭
【判断题】
某建筑工人经过安全教盲培训后，仍然未戴安全帽就进入现场作业施工，从事故隐患的角度来说，这种情况属于人的不安全行为。正确答案、
【判断题】
静电能够引起火灾爆炸的原因在于静电放电火花具有点火能量。正确答案、
【判断题】
任何单位和个人不宜侵占、毁损、拆除或者擅自移动地震监测设施
【判断题】
工业毒物由呼吸道、消化道、皮肤等器官进入人体.其进入人体的主要途径是皮肤
【判断题】
为达到对压缩机各轴承的良好润滑和冷却目的，必须严格控制润滑油的压力和温度。正确答案、
【判断题】
单位应当将消防安全工作纳入内部检查、考核、评比内容。正确答案、
【判断题】
氮气置换时要将各系统隔离，被置换的系统压力要高于其他系统，以防空气窜入。正确答案、
【判断题】
精炼石油产品制造业属于职业病危害严重的行业。正确答案、
【判断题】
安全阀的排泄量取决于阀座口径和伐瓣开启度。正确答案、
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