单选题The advantages of flash type evaporators, as compared to submerged tube type evaporators, include （）.A less internal corrosion because of lower brine densityB higher temperature evaporation for lower salinity of the distillate producedC less scale form

题目
单选题
The advantages of flash type evaporators, as compared to submerged tube type evaporators, include （）.
A

less internal corrosion because of lower brine density

B

higher temperature evaporation for lower salinity of the distillate produced

C

less scale formation in a flash evaporator

D

less feed-water required for a flash evaporator

相似考题

1.设在工程中定义了下列类型： Type Stutype ino As Integer strname As String*20 Strsex As String*1 Smark As Single End Type在窗体上正确使用这个类型的是下列哪个操作 A. Sub Command1_Click() Dim student As Stutype With student .ino=12 .strname=smith .strsex=男 .smark=89 End With End Sub B. Sub Command1_Click() Dim student As Stutype With student .ino=12 .strname=＂smith＂ .strsex=＂男＂ .smark=89 End With End Sub C. Sub Command1_Click() Dim student As Stutype With Stutype .ino=12 .strname=＂smith＂ .strsex=＂男＂ .smark=89 End With End Sub D. Sub Command1_Click() Dim student As Stutype With student .ino=12 .strname=＂smith＂ .strsex=＂男＂ .smark=89 End student End Sub

2.执行以下程序段后ARRAY DW 10DUP(2)XOR AX， AXMOV CX， LEHGTH ARRAYMOV SI， SIZE ARRAY_TYPE ARRAYNEXT： ADD AX，ARRAY[SI]SUB SI， TYPE ARRAYLOOP NEXT写出AX=【 】。

3.执行下面的程序后，AX寄存器中的数据是( )。 BUT DW 10 DUP (2) XOR AX，AX MOV CX，LENGTH MOV SI，SIZE BUF-TYPE BUF NEXT： ADD AX，BUF [SI] SUB SI，TYPE BUT LOOPA．20B．30C．32D．40

4.执行下面的程序段后，(AX)=______。ARRAY DW 10 DUP(2)XOP AX，AXMOV CX，LENGTH ARRAYMOV SI，SCE ARRAY-TYPE ARRAYNEXT： ADD AX，ARRAY[SI]SUB SI，TYPE ARRAYLOOP NEXT

更多“The advantages of flash type evaporators, as compared to sub”相关问题

  • 第1题：

    设在工程中定义了如下类型： Type stutype ino As Integer stmame As String*20 strsex As String*1 smark As Single End Type 在窗体上正确使用这个类型的是下列哪个操作( )。

    A．Sub Command1_click() Dimstudent As Stutype With student .ino=12 .strname=smith .strsex=男 .smark=89 End With End Sub

    B．Sub Command1_Click() Dim student As Stutype With student .ino=12 .strname="smith" .strsex="男" .smark=89 End With End Sub

    C．Sub Command1_Click() Dim student As Stutype With Stutype .ino=12 .strname="smith" .strsex="男" .smark=89 End With End Sub

    D．Sub Command1_click() Dim student As Stutype With student .ino=12 .strname="smith" .strsex="男" .smark=89 End student End Sub


    正确答案：B
    解析：本题考查为记录类型变量student赋值。使用With语句可以对某个对象执行一系列的语句，而不用重复指出对象的名称。其语法如下：With记录类型变量.记录类型变量成员名＝要赋的值…EndWith给记录类型变量中的字符串型成员赋值时要加双引号。

  • 第2题：

    有如下程序： Private Type stu X As String Y As Integer End Type Private Sub Command1 Click（ ） Dim a As stu X="ABCD" Y=12345 Print a End Sub 程序运行时出现错误，错误的原因是（ ）。

    A.Type定义语句没有放在标准模块中

    B.变量声明语句有错

    C.赋值语句不对

    D.输出语句Print不对


    正确答案：D
    D。【解析】本题程序的含义是，定义了一个stu类型，此类型包含有两个变量X和Y，当单击Command控件时，定义一个类型为stu类型的变量a，其中a．X的值为“ABCD”，a．Y的值为12345，再输出a。其中输出语句是错误的，此时输出只能标准输出可以输出a．X或者a．Y。

  • 第3题：

    You are designing a DNS implementing strategy to meet the business and technical requirement.  Which type of zone should you use？（）

    • A、 Sub Zones
    • B、 Standard Primary Zones
    • C、 Secondary Zones
    • D、 Active DirectoryIntegrated Zones

    正确答案:D

  • 第4题：

    单选题
    The heated feed-water entering any flash chamber of a flash-type evaporator will（）
    A

    vaporize, with the un-flashed water remaining at the temperature at which it entered the flash chamber

    B

    vaporize, with the un-flashed eater equalizing to the saturation conditions existing in the f lash chamber

    C

    vaporize, with the remaining water a t a temperature greater than it entered the flash chamber

    D

    boil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    For a flash type evaporator, the seawater heater will have to maintain a enough temperature to minimize scale formation（）
    A

    lower

    B

    higher

    C

    low

    D

    high


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    In the operation of a flash type evaporator equipped with air ejectors,the air and non- condensable gases are evacuated directly from the （）.
    A

    first stage flash chamber

    B

    second stage flash chamber

    C

    first stage after condenser

    D

    second stage distilling condenser


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    One distinct advantage of flash type evaporators, as compared to most other evaporators, is that in a flash evaporator （）.
    A

    high temperature distillate can be re- circulated to induce additional flashing

    B

    scale formation is not a severe problem

    C

    cold shocking is more effective in removing scale

    D

    water purity is greatly increased at high capacity


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    For a flash type evaporator, a demister is located the condenser（）
    A

    After

    B

    before

    C

    inside

    D

    outside


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    On a multistage flash-type evaporator, the flash chamber is （）
    A

    combined as part of the salt water feed heater

    B

    the open area above the brine levels in the first and second stages

    C

    combined as part of the distillate cooler

    D

    another term used to describe the vapor feed heater


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    Early models of the flash-type evaporators used a separate shell-and-tube heat exchanger as the air ejector condenser.More recent models use a combined air ejector condenser with the（）
    A

    distilling condenser

    B

    salt water feed heater

    C

    distillate cooler

    D

    flash chamber


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    The principal purpose of sub-cooling liquid refrigerant prior to its entering the expansion valve is to （）.
    A

    increase the refrigerating effect, by decreasing the amount of flash gas

    B

    allow the refrigerant to enter the throttling device in a saturated condition

    C

    increase the refrigerating effect by increasing the amount of flash gas

    D

    minimize the temperature drop of the liquid as it passes through the solenoid valve to the outlet side


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    The primary reason low pressure evaporators produce distillate more efficiently, and with less scale formation, than high pressure evaporators is （）.
    A

    evaporation is accomplished in a vacuum

    B

    due to the higher temperature of the incoming feed

    C

    due to the latent heat of evaporation principle

    D

    evaporation in a submerged medium produces more distillate


    正确答案： D
    解析： 暂无解析

  • 第13题：

    有如下程序：

    Private type stu

    X as string

    Y as integer

    End type

    Private Sub Command1_Click()

    Dim a as stu

    a.x=”ABCD”

    a.Y=12345

    print a

    End Sub

    程序运行时出现错误，错误的原因是

    A)Type定义语句没有放在标准模块中

    B)变量声明语句有错

    C)赋值语句不对

    D)输出语句print不对


    正确答案：D
    【答案】：D
    【知识点】：结构体类型变量的定义及使用
    【解析】结构体类型的变量只能单独引用它的每一个成员，而不能整体使用。故本题选D。

  • 第14题：

    In a flash type evaporator, all saltwater heaters are vented through individual vent cocks to the ______.

    A.saltwater heater shell

    B.second-stage condenser

    C.atmosphere

    D.second-stage flash chamber


    正确答案：C

  • 第15题：

    单选题
    You are using a radar in which your own ship is shown at the center，and the heading flash always points to 0°. If bearings are measured in relation to the flash，what type of bearings are produced? （）
    A

    Relative

    B

    TRUE

    C

    Compass

    D

    Magnetic


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    In a flash type evaporator, all saltwater headers are vented through individual vent cocks to the（）.
    A

    saltwater heater shell

    B

    second-stage condenser

    C

    atmosphere

    D

    second-stage flash chamber


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    Small droplets of water entrained in the flashed vapor produced in a flash-type evaporator, are removed by the （）
    A

    spray pipes

    B

    demisters

    C

    condensers

    D

    splash baffles


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    The demisters installed in a flash-type evaporator serve to （）
    A

    deaerate the first effect distillate

    B

    filter the condensed flash vapors

    C

    deaerate the first and second effect distillate

    D

    remove small water droplets entrained in the flashed vapor


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    The heated feedwater entering any flash chamber of a flash-type evaporator will（）
    A

    vaporize, with the unflashed water remaining at the temperature at which it entered the flash chamber

    B

    vaporize, with the unflashed water equalizing to the saturation conditions existing in the flash chamber

    C

    vaporize, with the remaining water at the temperature greater than it entered the flash chamber

    D

    boil, allowing steam bubbles to rise through the brine at the bottom of the flash chamber


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    The advantages of flash type evaporators, as compared to submerged tube type evaporators, include （）.
    A

    less internal corrosion because of lower brine density

    B

    higher temperature evaporation for lower salinity of the distillate produced

    C

    less scale formation in a flash evaporator

    D

    less feed-water required for a flash evaporator


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    The difference between Fixed pitch propeller (FPP) and Controllable pitch propeller (CPP) is in that（）
    A

    for FP, once fitted, the position of the blades can also be changed in operation

    B

    for CP, once fitted, the position of the blades can also be changed in operation

    C

    the CP type has a relatively smaller hub compared with the FP propellers

    D

    the FP type has a relatively larger hub compared with the CP propellers


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    Under normal operating conditions, the highest temperature and pressure conditions existing in a flash-type evaporator will occur in the （）.
    A

    first stage

    B

    second stage

    C

    distillate cooler

    D

    salt water feed heater


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    You are designing a DNS implementing strategy to meet the business and technical requirement.  Which type of zone should you use？（）
    A

     Sub Zones

    B

     Standard Primary Zones

    C

     Secondary Zones

    D

     Active DirectoryIntegrated Zones


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    A vacuum is initially created in a flash type distilling plant by（）.
    A

    the flashing of the feed water

    B

    the condensation of the saltwater feed

    C

    air ejectors, eductors, or a separate vacuum pump

    D

    condensation of the distillate


    正确答案： C
    解析： 暂无解析

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