单选题A container holds 8 pints of a solution which is 25% acid. If 2 quarts of pure acid are added to the container, what percent of the resulting mixture is acid? (1 quart=2 pints)A 50B 20C 40D 45E 35

题目
单选题
A container holds 8 pints of a solution which is 25% acid. If 2 quarts of pure acid are added to the container, what percent of the resulting mixture is acid? (1 quart=2 pints)
A

50

B

20

C

40

D

45

E

35

相似考题

1.You are a database developer for a container manufacturing company. The containers produced by your company are a number of different sizes and shapes. The tables that store the container information are shown in the Size, Container, and Shape Tables exhibit:SizeSizeIDSizeNameHeightContainerContainerIDShapeIDSizeIDShapeShapeIDShapeNameMeasurementsA sample of the data stored in the tables is shown below:Size TableSizeID SizeName Height1 Small 402 Medium 603 Large 804 Jumbo 100Shape TableShapeID ShapeName Measurement1 Triangle 102 Triangle 203 Triangle 304 Square 205 Square 306 Square 407 Circle 158 Circle 259 Circle 35Periodically, the dimensions of the containers change. Frequently, the database users require the volume of a container. The volume of a container is calculated based on information in the shape and size tables.You need to hide the details of the calculation so that the volume can be easily accessed in a SELECT query with the rest of the container information. What should you do?A. Create a user-defined function that requires ContainerID as an argument and returns the volume of the container.B. Create a stored procedure that requires ContainerID as an argument and returns the volume of the container.C. Add a column named volume to the container table. Create a trigger that calculates and stores volume in this column when a new container is inserted into the table.D. Add a computed column to the container table that calculates the volume of the container.

2.You are carrying cargoes of crotonaldehyde，phosphoric acid，and morpholine on your multiple-product tanker. Which of the following statements is TRUE?A.Each of the cargoes must be segregated from the other by at least two barriersB.The minimum protective clothing required for taking samples of phosphoric acid is goggles or a face shieldC.Aluminum，copper，and zinc are prohibited in all valve parts in contact with these cargoesD.The required warning sign must have the legend "cancer hazard" added to it

3.Zhongxing Chemicals Corporation in China exported two tons of disinfectant (消毒剂) in one container to the United States. The trade was effected on the term of CIF New York US$ 20000. Upon the reception of the consignment at New York Port, the Consignee found the disinfectant was wet and useless according to the normal function of the substance. The consignee brought the claim against the Carrier and Insurer and gave the notice to the local survey agent mentioned in the Policy without any delay. The cause and origin of the damage, in accordance with the survey report, is the moisture in the Container, resulting either from: Stuffing of the goods in an atmosphere with a high hygrometry (湿度) Accidental wetting by rainwater during the course of stuffing Stowing the bags on wet wooden bases.Questions:(可用中文回答)(1)What shall we do according to the survey report?(2) If the shipper presented a loading inspection report as follows, what measures shall we take?

4.A deck-stowed 40-foot container is giving off smoke，and one end is discolored from heat. The cargo is valuable and easily damaged by water. You want to extinguish the fire without further damage if possible. What action should you take? ______.A.Connect a portable line from the ship's fixed system and discharge CO2 into the containerB.Flood the container with water and disregard any cargo damage as the fire threatens the entire vesselC.Pierce the container and discharge 6 or more portable CO2's then add more CO2 hourlyD.Cool the exterior of the container with water and close all vents； then keep it cooled until it can be off-loaded

参考答案和解析
正确答案： B
解析：
Remember that 2 quarts of acid are 4 pints. There are now 8×25%+4, or 6 pints of acid in 12 pints of solution. Therefore the new solution is 4/10 or 50% acid.
更多“单选题A container holds 8 pints of a solution which is 25% acid. If 2 quarts of pure acid are added to the container, what percent of the resulting mixture is acid? (1 quart=2 pints)A 50B 20C 40D 45E 35”相关问题

  • 第1题：

    What purpose does a bridge fitting serve when lashing containers ________．

    A.Ties a container stack to the deck

    B.Ties a container to the container below it

    C.Restrains racking loads

    D.Restrains the container against horizontal motion


    正确答案：D

  • 第2题：

    A certain weak acid is 10% dissociated in 1.0mol·L-1 solution.In 0.10mol·L-1 solution，the percentage of dissociation would be（）。

    • A、greater than10
    • B、10
    • C、less than10
    • D、zero

    正确答案:A

  • 第3题：

    单选题
    Your ship is sinking rapidly. A container containing an inflatable liferaft has bobbed to the surface upon functioning of the hydrostatic release. Which action should you take?（）.
    A

    Cut the painter line so it will not pull the liferaft container down

    B

    Swim away from the container so you will not be in danger as it goes down

    C

    Take no action because the painter will cause the liferaft to inflate and open the container

    D

    Manually open the container and inflate the liferaft with the hand pump


    正确答案： C
    解析： 暂无解析

  • 第4题：

    单选题
    When to remove scale from the cooling spaces, acid solution （） in the system can be tested from time to time by putting some on to a piece of lime.
    A

    strength

    B

    dense

    C

    percentage

    D

    velocity


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    Your 15-meter tug is underway and crossing a deep and narrow channel. A large container vessel is off your port bow on a steady bearing. Which statement is TRUE concerning this situation? （）.
    A

    You should maintain course and speed

    B

    The container vessel is the stand-on as it is the larger vessel

    C

    You are not to impede the safe passage of the container vessel in the channel

    D

    None of the above


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    Which of the fire extinguishing agents listed is the safest to use when combating a class C fire?（）
    A

    CO2

    B

    Foam

    C

    Water fog

    D

    Soda acid


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    which of the following is not true about the classification of the cantainers？（）
    A

    containers are classified as general purpose (dry cargo) container and specific purpose container

    B

    general purpose container (GP) is suitable for the widest varieties of cargo

    C

    specific purpose container is suitable for the specific cargo

    D

    bulk container， reefer container， open-top container are all general purpose containers


    正确答案： B
    解析： 暂无解析

  • 第8题：

    单选题
    An inflatable liferaft is floating in its container，attached to the ship by its painter，as the ship is sinking rapidly. Which action should be taken with respect to the liferaft container? （）
    A

    Cut the painter line so that it will not pull the liferaft container down

    B

    Swim away from the container so that you will not be in danger as it goes down

    C

    Take no action as the pull on the painter will cause the liferaft to inflate and open the container

    D

    Manually open the container and inflate the liferaft with the hand pump


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    You are on a containership carrying a tank container that had been filled with sodium hydroxide solution. The container is empty but has not been cleaned. Which，if any，placard is required?（）.
    A

    No placard is required; the tank openings must be sealed

    B

    Empty placard with corrosive placard

    C

    Residue label with the UN number

    D

    Black and white corrosive placard


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    Which basic authentication type is optional for a J2EE 1.4 compliant web container？（）
    A

    HTTP Basic Authentication

    B

    Form Based Authentication

    C

    HTTP Digest Authentication

    D

    HTTPS Client Authentication


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    A person who gets battery acid in an eye should IMMEDIATELY wash the eye with（）.
    A

    boric acid solution

    B

    water

    C

    baking soda solution

    D

    ammonia


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    Acid solution（） in the system can be tested from time to time by putting some on to a piece of lime.
    A

    strength

    B

    dense

    C

    percentage

    D

    velocity


    正确答案： C
    解析： 暂无解析

  • 第13题：

    ______is one of four uprights comprising a cell in a containership into which a container fits exactly．These uprights hold the container in position．

    A.stanchion

    B.shore

    C.cellular doublebottom

    D.Ceil guide


    正确答案：D
    箱格导轨式由四个支柱组成的，集装箱船上每个单元内能准确的装入一个集装箱，支柱用于固定集装箱的位置。

  • 第14题：

    which of the following is not true about the classification of the cantainers？（）

    • A、containers are classified as general purpose (dry cargo) container and specific purpose container
    • B、general purpose container (GP) is suitable for the widest varieties of cargo
    • C、specific purpose container is suitable for the specific cargo
    • D、bulk container， reefer container， open-top container are all general purpose containers

    正确答案:D

  • 第15题：

    单选题
    A container holds 8 pints of a solution which is 25% acid. If 2 quarts of pure acid are added to the container, what percent of the resulting mixture is acid? (1 quart=2 pints)
    A

    50

    B

    20

    C

    40

    D

    45

    E

    35


    正确答案： A
    解析：
    Remember that 2 quarts of acid are 4 pints. There are now 8×25%+4, or 6 pints of acid in 12 pints of solution. Therefore the new solution is 4/10 or 50% acid.

  • 第16题：

    单选题
    The gauge pressure inside a container is -0~5kg/cm2, then what is the absolute pressure exerted to the inside surface of thin container?（）
    A

    0~05Mpa

    B

    0~95Mpa

    C

    1~05Mpa

    D

    0~5Mpa


    正确答案： A
    解析： 暂无解析

  • 第17题：

    单选题
    After you have thrown the liferaft and stowage container into the water，you inflate the liferaft by（）.
    A

    pulling on the painter line

    B

    forcing open the container which operates the CO2

    C

    hitting the hydrostatic release

    D

    using the hand pump provided


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    What is the meaning of the term tare weight?（）.
    A

    Pounds of force necessary to damage a container

    B

    Total weight of a container and contents

    C

    Weight of a container

    D

    Weight of the contents of a container


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    You are on a containership. The cargo includes a container of small arms ammunition，a container of lead-acid storage batteries and bottles of methyl acetylene. Which statement is TRUE?（）.
    A

    The storage batteries must be stowed on deck away from the ammunition

    B

    The storage batteries must be at least ten horizontal feet away from the methyl acetylene if in the same space

    C

    The ammunition must be separated from the methyl acetylene by at least one hold

    D

    The methyl acetylene may be stowed on deck or under deck with under deck stowage to be used if available


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    What purpose does a bridge fitting serve when lashing containers?（）.
    A

    Ties a container stack to the deck

    B

    Ties a container to the container below it

    C

    Restrains racking loads

    D

    Restrains the container against horizontal motion


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    You are connected using SQL* Plus to a multitenant container database (CDB) with SYSDBA privilegesand execute the following sequence statements:What is the result of the last SET CONTAINER statement and why is it so?（）
    A

    It succeeds because the PDB_ADMIN user has the required privileges.

    B

    It fails because common users are unable to use the SET CONTAINER statement.

    C

    It fails because local users are unable to use the SET CONTAINER statement.

    D

    If fails because the SET CONTAINER statement cannot be used with PDB$SEED as the target pluggable database (PDB).


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    The electrolyte in a lead-acid storage battery consists of distilled water and （）.
    A

    hydrogen chloride

    B

    calcium chloride

    C

    sulfuric acid

    D

    muriatic acid


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    When fighting a spreading fire resulting from a broken fuel line, you should FIRST （）.
    A

    look for a CO2 extinguisher

    B

    use a soda acid extinguisher

    C

    shut off the fuel supply

    D

    smother the fire with rags


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    You are carrying cargoes of crotonaldehyde，phosphoric acid，and morpholine on your multiple-product tanker. Which of the following statements is TRUE? （）
    A

    Each of the cargoes must be segregated from the other by at least two barriers

    B

    The minimum protective clothing required for taking samples of phosphoric acid is goggles or a face shield

    C

    Aluminum，copper，and zinc are prohibited in all valve parts in contact with these cargoes

    D

    The required warning sign must have the legend cancer hazard added to it


    正确答案： B
    解析： 暂无解析

相关内容