【单选题】
催化剂分散罐D106B系统中___是氮封阀。
A. HV10304B
B. HV10305B
C. HV10306B
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答案
A
解析
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对丙烯压缩机置换过程中,为防止现场压力表超量程,现场___应停用。
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D301出料中大约含有___丙烯单体。
A. 5%
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下列不属于I303联锁结果的是___
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SR301有___个射源。
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D. 4
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E301所用冷却介质为___。
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D303罐压力正常控制在___Mpa。
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套管式换热器主要传热方式为___。
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用于悬浮催化剂配置的油/脂比例一般是___。
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TEAL催化剂由D111转移至D101是通过___。
A. N2压送
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当S103液位高报时,液位开关通过联锁___切断向D101的进料 。
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应怎样处理溅到皮肤上的腐蚀性液体。___
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给电子体系统停车时先关闭___后,才能停泵。
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配置催化剂时D106需要升温到多少度___。
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D106配置催化剂,油脂与催化剂加入的顺序是___。
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D105中油脂的水含量应小于:___。
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控制D106A温度的控制阀TV10303AA和TV10303AB是___控制的。
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下列选项中,能够引起环管反应器轴流泵安全罐密封液位升高___。
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当D102油中TEAL的浓度达到___时需处理。
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PP装置S203A是:___。
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PP装置S203A/B的冲洗丙烯是经过___冷却器后来的冷丙烯。
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D201温度控制在___之间。
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催化剂在___被给电子体和TEAL活化。
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装置开工过程中,三乙基铝和给电子体投用___h后才投用主催化剂。
A. 1
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C. 3
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向预接触罐投用三乙基铝时,一定要保证三乙基铝管线的压力___预接触罐的压力。
A. 小于
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聚丙烯的熔融指数由___调节。
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C302塔板数为___。
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三剂投用需要的压力是___。
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A. Create a whitelist and manually add the approved addresses.
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Refer to the exhibit. What is the effect of the given configuration?___
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What are two major considerations when choosing between a SPAN and a TAP when plementing IPS?___
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【多选题】
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【多选题】
Which three descriptions of RADIUS are true? ___
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【多选题】
Which two configurations can prevent VLAN hopping attack from attackers at VLAN 10?___
A. using switchport trunk native vlan 10 command on trunk ports
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【多选题】
What are two features of transparent firewall mode ___
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【多选题】
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Which two statements about hardware-based encrption are true?___
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In which two modes can the Cisco We b Security appliance be de ployed?___
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1.三相刀开关的图形符号与交流接触器的主触点符号是___。
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【单选题】
2.刀开关的文字符号是___。
A. QS
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【单选题】
3.行程开关的文字符号是___。
A. QS
B. SQ
C. SA
D. KM
【单选题】
4.交流接触器的文字符号是___。
A. QS
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C. SA
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【单选题】
5.熔断器的作用是___。
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【单选题】
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A. 短路保护
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