基层单位应根据根据()等参数看加热炉是否在设计允许的范围内运行,严禁超温、超压、超负荷运行。
(B)进料量
(C)炉外壁温度
(D)物料温度
(B)进料量
(C)炉外壁温度
(D)物料温度
此题为判断题(对,错)。
A.看风门,看火孔,点火孔,防爆门,人孔门,弯头箱严密不漏风
B.所有燃烧器配风相同
C.所有燃烧器的配风在燃料燃烧充分的情况下保持最小并关闭停用燃烧器的风门
D.用烟道挡板调整加热炉烟道气氧含量
A.吸附装置短循环、反应器氢循环
B.装置进行长循环、反应器氢循环
C.保持正常流程,所有参数不变、只是PX切入原料罐
D.保持正常流程,降负荷及保持低的反应温度,PX切入原料罐
根据气力输送的特点,降低动力消耗,节约能源是一个重要的研究课题,从经验中知,管道内径是关于能耗的重要参数。直观上看,当输送量一定时,管径过小,输送易阻滞,管径过大,虽输送畅通,但又造成能量的浪费。根据经验,把管径分成三组,各组的试验结果如下表所示,试用方差分析法比较各组的效果.
管径(mm) | 单位功耗 |
230 | 0.0308,0.0476,0.0504 |
250~260 | 0.0532,0.032,0.0218,0.028,0.028, 0.042,0.0336,0.042,0.042,0.028 |
280~320 | 0.07,0.07,0.0644,0.0312,0.0756,0.0756, 0.07,0.0588,0.0588,0.042,0.0308,0.0364, 0.0448,0.21,0.154,0.1064,0.1288,0.112, 0.1064,0.1288,0.0756,0.0644,0.0504,0.0644, 0.0504,0.0308 |
A.去话分析
B.来话分析
C.数字分析
D.路由及中继选择
A.直属检验检疫局根据企业生产、加工的不同时期,有针对性地施行日常监督管理和定期监督检查
B.日常监督管理工作结合出口食品检验检疫的现场检验、查验等工作一并实施
C.定期监督检查应根据注册登记规范要求进行检查,对日常监督管理中发现问题及整改情况进行跟踪核查
D.定期监督检查应当按照规定要求,填写相关的注册登记评审记录
A.GB1-Ⅲ级次高压
B.GB1-VI级次高压
C.GB1-V级中压
D.GB1-VI中压