Which statement is TRUE concerning deep well self-priming pumps ________．A.When loading oil cargo，it is always loaded via the discharge line through to the pump until the tank is topped offB.Stripping systems are generally eliminated for the purposes of c

题目

Which statement is TRUE concerning deep well self-priming pumps ________．

A.When loading oil cargo，it is always loaded via the discharge line through to the pump until the tank is topped off

B.Stripping systems are generally eliminated for the purposes of cargo handling

C.In recent years deep well pumps have become increasingly unpopular in product tankers and medium size crude ships

D.There is no danger of damaging the pump from overheating

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1.Concerning baby-sitting and managing a paper route, which of the following statement is true?A． Both call for daily service.B． Both call for a sense of responsibility.C． Neither is affected by bad weather.D． Neither is helpful to character development.

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更多“Which statement is TRUE concerning deep well self－priming pumps ________.A.When loading oi ”相关问题

  • 第1题：

    Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited ________．

    A.It is required on all vessels

    B.It may be located in a conspicuous place in the wheelhouse

    C.It may be located at the bilge and ballast pump control station

    D.All of the above


    正确答案：C

  • 第2题：

    Which statement concerning GPS is TRUE ________．

    A.It cannot be used in all parts of the world

    B.There are 12 functioning GPS satellites at present

    C.It may be suspended without warning

    D.Two position lines are used to give a 2D fix


    正确答案：C

  • 第3题：

    Which statements concerning the switch construct are true？（）  

    • A、All switch statements must have a default label.
    • B、There must be exactly one label for each code segment in a switch statement.
    • C、The keyword continue can never occur within the body of a switch statement.
    • D、No case label may follow a default label within a single switch statement.
    • E、A character literal can be used as a value for a case label.

    正确答案:E

  • 第4题：

    单选题
    You are loading a cargo tank on your container ship. The tank displays the red label shown. Which statement is TRUE? （）
    A

    The tank contains propylene

    B

    The tank's volume is 1077 cubic feet

    C

    There are three tanks in the shipment

    D

    The tank contains an oxidizing material


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    View the Exhibit and examine the structure of the ORDERS and ORDERJTEMS tables.  Evaluate the following SQL statement：   SELECT oi.order_id， product_jd， order_date   FROM order_items oi JOIN orders o   USING （order_id）；   Which statement is true regarding the execution of this SQL statement？（）
    A

     The statement would not execute because table aliases are not allowed in the JOIN clause.

    B

     The statement would not execute because the table alias prefix is not used in the USING clause.

    C

     The statement would not execute because all the columns in the SELECT clause are not prefixed with table aliases.

    D

     The statement would not execute because the column part of the USING clause cannot have a qualifier in the SELECT list.


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    Positive displacement, helical gear pumps are well suited for pumping oil because （）
    A

    stuffing boxes eliminate the leakage problems usually associated with other gear pumps

    B

    it is not necessary to closely maintain design clearances with this pump

    C

    they are essentially self-priming and produce a high suction lift

    D

    these pumps are designed with extreme tooth angled


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    Two barges are being pushed ahead by a tugboat.Which statement is TRUE concerning lights on the barges（）.
    A

    Each vessel should show sidelights

    B

    Each vessel should show at least one white light

    C

    The barges should be lighted as separate units

    D

    The barges should be lighted as one vessel


    正确答案： C
    解析： 暂无解析

  • 第8题：

    单选题
    Which statement is TRUE concerning hawser towing? （）
    A

    The catenary in a hawser should be sufficient so that the hawser just touches the bottom

    B

    The hawser is of sufficient length for towing when taut between tug and tow

    C

    Increasing speed usually increases the catenary in the hawser

    D

    Shortening the tow hawser generally decreases the maneuverability of the tug


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    If the situation arose where it became necessary to tow a disabled vessel，which statement is TRUE concerning the towing line?（）.
    A

    The towing line between the two vessels should be clear of the water

    B

    The towing line should be taut at all times between the vessels

    C

    There should be a catenary so the line dips into the water

    D

    None of the above


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    When loading containers into the cell guides in the hold of a container ship，which statement is TRUE?（）.
    A

    No further securing is usually required

    B

    Containers must have vertical lashings if they do not have twist lock securing

    C

    All containers must have vertical and horizontal lashings

    D

    The container must be locked into the cell guide


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    Which statement is TRUE concerning gasoline vapors on board a vessel（）.
    A

    They are heavier than air and will settle in the lowest part of the vessel

    B

    They are lighter than air and will settle in the highest part of the vessel

    C

    They should be vented into the engine to improve combustion

    D

    They should be vented into the wheelhouse


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    Which statement is TRUE concerning spare charges for portable fire extinguishers on unmanned tank barges?（）.
    A

    Spare charges shall be carried for at least 50 percent of each size and variety required on board

    B

    If the unit cannot be charged by the vessel's personnel，one spare unit shall be carried in lieu of spare charges

    C

    Spare charges shall be stowed in watertight containers on deck

    D

    Regulations concerning spare charges do not apply to unmanned barges


    正确答案： A
    解析： 暂无解析

  • 第13题：

    Which statement is TRUE concerning combustible gas indicators ________．

    A.One sample of air is adequate to test a tank

    B.They do not work properly where there is a lack of oxygen

    C.They will detect a lack of oxygen

    D.They are calibrated to read the percentage chance of explosion


    正确答案：B

  • 第14题：

    Concerning the identification signal for a pilot vessel, in fog, which statement is TRUE?___.

    A.When at anchor, the pilot vessel is only required to sound anchor signals

    B.The identification signal must be sounded any time the pilot vessel is underway

    C.The pilot vessel may only sound the identity signal when making way

    D.All of the above


    正确答案：A
    雾中有关引水船的识别信号，哪句是正确的？当锚泊时，引水船仅被要求鸣放锚泊船信号.

  • 第15题：

    Which statements are true regarding table compression？（）

    • A、 It saves disk space and reduces memory usage.
    • B、 It saves disk space but has no effect on memory usage.
    • C、 It incurs extra CPU overhead during DML as well as direct loading operations.
    • D、 It incurs extra CPU overhead during DML but not direct loading operations.
    • E、 It requires uncompress operation during I/O.

    正确答案:A,C

  • 第16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17题：

    单选题
    Which of the following pumps are self-priming, and can deal with liquid from a level below the pump? （） (1) reciprocating (2) rotary (3) centrifugal
    A

    （1）only

    B

    （1）and（2）

    C

    （1），（2）and（3）

    D

    （2）and（3）


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    Which statement(s) is/are TRUE concerning crane cargo operations? （）
    A

    Do not exceed rated load capacity of crane and container spreader or slings

    B

    During any cargo handling operation，the safety of personnel is paramount

    C

    Cargo handlers must be outfitted with adequate protection from personal injury

    D

    All the above


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    Which statement is TRUE concerning the gooseneck（）.
    A

    It is a sailing maneuver which brings the vessel's head through the wind

    B

    It connects the boom to the mast and allows the boom to swing freely

    C

    It is a sailing condition where there is a loss of air flow over the sails

    D

    None of the above


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    Which of the following statements is true concerning centrifugal pumps?（）
    A

    They are particularly suited for pumping high viscosity fluids

    B

    They are started with the discharge valve opened

    C

    The flow of liquid is developed by imparting energy due to the rotation of an impeller

    D

    They are always mounted in a horizontal position


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    Which statement concerning teams is true?
    A

    Nowadays teamwork is a popular concept.

    B

    All the companies put great emphasis on teams.

    C

    A good team involves close supervision of the team leader.

    D

    There’s nothing in common between a team and a group.


    正确答案： B
    解析：
    根据本文的第一句话“Teams are all the rage in the workplace today, and every organization speaks of the importance of teams.”，可以判断选项A与本句的意思相符合，此句中的固定短语all the rage的意思是“非常流行，风靡一时”，所以本题答案为A。

  • 第22题：

    单选题
    Which statement is TRUE concerning lifeboat gripes?（）
    A

    They must be released by freeing a safety shackle

    B

    They should not be released until the boat is in lowering position

    C

    They may be adjusted by a turnbuckle

    D

    They are normally used only with radial davits


    正确答案： D
    解析： 暂无解析

  • 第23题：

    单选题
    Which statement concerning Montauk Point Light is TRUE（）.
    A

    The light comes on at sunset

    B

    There is an emergency light if the main light is extinguished

    C

    The height of the light is 24 feet

    D

    The tower is painted with black and white stripes


    正确答案： A
    解析： 暂无解析

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