更多“二次冷却剂 secondary coolant”相关问题
  • 第1题:

    在精馏操作中,可以通过()的方法来提高塔顶压力。

    • A、增加冷却剂或增大回流比
    • B、增加冷却剂或减小回流比
    • C、减小冷却剂或增大回流比
    • D、减小冷却剂或减小回流比

    正确答案:D

  • 第2题:

    提钒时加入冷却剂的目的,有哪些冷却剂?


    正确答案:为了控制熔池温度,使之低于吹钒的转化温度,达到脱钒保碳的目的。种类:生铁块、废钢、废钒渣、铁皮球、污泥球、铁矿石、烧结矿、球团矿等。

  • 第3题:

    (反应堆冷却剂系统)压力边界 (reactor coolant system) pressure boundary


    正确答案: 在运行温度和压力下包容反应堆冷却剂同时用于包容放射性物质的边界。

  • 第4题:

    二回路 secondary coolant circuit


    正确答案:用于循环二次冷却剂的系统及其有关系统的总称。

  • 第5题:

    反应堆冷却剂环路 reactor coolant loop


    正确答案: 并联设置的循环反应堆冷却剂的回路。

  • 第6题:

    反应堆冷却剂泵为什么有可能发生反转?如何防止冷却剂泵反转?


    正确答案: 当一台或两台冷却剂泵停运,而其它冷却剂泵在运行时,已停转泵的环路中的水会反向流动,使停运的泵反转。为了防止冷却剂泵反转,在冷却剂泵上安装有反倒转装置

  • 第7题:

    SSR是()的缩写。

    • A、secondary surface radar
    • B、secondary surveillance radio
    • C、secondary surveillance radar
    • D、surveillance secondary radar

    正确答案:C

  • 第8题:

    问答题
    提钒时加入冷却剂的目的,有哪些冷却剂?

    正确答案: 为了控制熔池温度,使之低于吹钒的转化温度,达到脱钒保碳的目的。种类:生铁块、废钢、废钒渣、铁皮球、污泥球、铁矿石、烧结矿、球团矿等。
    解析: 暂无解析

  • 第9题:

    单选题
    Due to () action of pistons some relative motion between parts in contact in the coolant supply and return system must occur.
    A

    reciprocating

    B

    rotating

    C

    running

    D

    removing


    正确答案: B
    解析: 暂无解析

  • 第10题:

    单选题
    Combustion knock occurring in a diesel engine can be caused by ()
    A

    low coolant temperature

    B

    insufficient fuel

    C

    high ambient temperature

    D

    carbon buildup on the injector tips


    正确答案: C
    解析: 暂无解析

  • 第11题:

    单选题
    Which of the following precautions must be taken if an electric immersion heater is used to keep the coolant in a diesel engine warm during the time the engine is secured?()
    A

    The coolant temperature must be maintained at 180℃

    B

    The thermostatic bypass valves must be manually opened before the engine is started

    C

    The pressure cap must be removed while the engine is secured

    D

    Electrical power to the heater must be secured before the cooling system is drained


    正确答案: A
    解析: 暂无解析

  • 第12题:

    单选题
    Sea water is not directly used as a coolant for engines because of its ().
    A

    low specific heat

    B

    corrosive action

    C

    high expense

    D

    acid property


    正确答案: A
    解析: 暂无解析

  • 第13题:

    SCG的主小区被称作()

    • A、Primary-cell
    • B、MCG-Secondary-cell
    • C、SCG-Secondary-cell
    • D、PSCell

    正确答案:D

  • 第14题:

    反应堆中冷却剂的功用,以及常用的冷却剂种类?


    正确答案:水、重水、钠、气、有机液

  • 第15题:

    冷却剂丧失事故失水事故 loss-of-coolant accident 〔LOCA)


    正确答案: 反应堆冷却剂流失速率超过正常补给系统补给能力的事故,对轻水堆,亦称失水事故。

  • 第16题:

    反应堆冷却剂一次冷却剂 reactor coolant primary coolant


    正确答案: 用于导出反应堆堆芯热量并循环使用的载热剂,对非直接循环反应堆,亦称一次冷却剂。

  • 第17题:

    (反应堆)冷却剂除气系统﹝压水堆﹞ (reactor) coolant degasing system


    正确答案: 化学和容积控制系统组成部分之一,它通过容积控制箱释出冷却剂中的裂变气体产物和氧气,经氮净化排到气体废物处理系统。

  • 第18题:

    A customer has one IBM System Storage DS8700 in their main data center with one DS6800 at a secondary site. They are using the Global Copy feature between the sites. They want to bring up a test image at the secondary site using the primary site data. Which sequence of actions will properly bring up the secondary site?()

    • A、bring up the secondary site on the target disks
    • B、suspend and bring up the secondary site on the target disks
    • C、perform a FlashCopy and bring up the secondary site on the target disks
    • D、"go-to-sync", perform aFlashCopy, and bring up the secondary site on the target disks

    正确答案:D

  • 第19题:

    何谓载热体、加热剂和冷却剂?常用的加热剂和冷却剂有哪些? 


    正确答案:载热体:参与传热的流体称为载热体。
    加热剂:温度较高,传热过程中放出热量的流体称为加热剂或热载热体。
    冷却剂:温度较低,传热过程中吸收热量的流体称为冷却剂或冷载热体。

  • 第20题:

    单选题
    Sea water is not used directly as a coolant because of ().
    A

    low specific heat

    B

    high specific heat

    C

    corrosive action

    D

    high viscosity


    正确答案: B
    解析: 暂无解析

  • 第21题:

    单选题
    The customer brings their mini-tower and a new DVD/RW drive they want installed. The technician finds a second hard drive in an empty 5.25 bay connected to the secondary bus and jumpered as a slave. The ribbon cable will not stretch from the primary hard drive to the open 5.25 inch bay. Which of the following is the BEST solution?()
    A

    Connect the new DVD drive as the primary on the secondary bus and leave the old CD drive disconnected.

    B

    Move the secondary hard drive next to the primary hard drive and connect to the primary bus. Connect the new DVD drive as the slave on the secondary bus.

    C

    Move the secondary hard drive from the secondary to the primary bus and then reformat the hard drive after rebooting then reassign the drive letters in disk management prior to installing the new DVD drive on the secondary bus.

    D

    Move the secondary hard drive to the bay and then connect it to the primary bus. Connect themini-tower and the new DVD drive as the master on the secondary bus.


    正确答案: D
    解析: 暂无解析

  • 第22题:

    单选题
    Engine coolant accumulating in the diesel engine lubricating oil can result from a ()
    A

    low oil pressure

    B

    high coolant pressure

    C

    leaking fuel injector

    D

    cracked cylinder head or liner


    正确答案: D
    解析: 暂无解析

  • 第23题:

    问答题
    何谓载热体、加热剂和冷却剂?常用的加热剂和冷却剂有哪些?

    正确答案: 载热体:参与传热的流体称为载热体。
    加热剂:温度较高,传热过程中放出热量的流体称为加热剂或热载热体。
    冷却剂:温度较低,传热过程中吸收热量的流体称为冷却剂或冷载热体。
    解析: 暂无解析