The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to ______.A.a difference in water pressureB.the method of breaking up the water streamC.the length of the applicatorD.A

题目

The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to ______.

A.a difference in water pressure

B.the method of breaking up the water stream

C.the length of the applicator

D.All of the above

相似考题

1.One advantage of the all-purpose nozzle is that it ______.A.can fit any size hoseB.converts a stream of water into a fogC.increases the amount of water reaching the fireD.can spray two streams of water at the same time

2.Deadweight is ________ ．A.the tonnes of the displacement of a vessel in water of a specific gravity of 1．025 at summer load water lineB.the difference in tonnes between the displacement in salt water at summer load waterline and the light weight of the vesselC.the cargoes in tonnes that can be loaded in a vessel at summer load water lineD.the bale capacity in cubic meters of a vessel

3.The height of tide is the ______.A.depth of water at a specific time due to tidal effectB.difference between the depth of the water and the area's tidal datumC.difference between the depth of the water and the high water tidal levelD.difference between the depth of the water at high tide and the depth of the water at low tide

4.The difference in tones between the displacement in salt water at summer load waterline and the light weight of the vessel is______．A.gross tonnageB.net tonnageC.DisplacementD.deadweight

更多“The difference in water spray pattern between the high－velocity tip and low－velocity appli ”相关问题

  • 第1题：

    The high-velocity fog tip used with the all-purpose fire fighting nozzle should always be ______．

    A.Attached by a chain

    B.Coated with heavy grease to prevent corrosion

    C.Painted red for identity as emergency equipment

    D.Stored in the clip at each fire station


    正确答案：A

  • 第2题：

    what is the difference between the HSRP and VRRP？


    正确答案: （1）VRRP is an IEEE standard （RFC 2338） for router redundancy； HSRP is a Cisco proprietary protocol.
    （2）VRRP allows actual router IP address to be the same with the virtual IP，and if the same the router which get the IP will become Master router of the VRRP group；HSRP do not allow actual router IP address to be the same with the virtual IP.
    （3）HSRP uses the multicast address 224.0.0.2 which represent all router in the subnet ， while VRRP uses the multicast address 224.0.0.18；HSRP uses UDP port 1985 while VRRP uses a protocol number of 112.
    （4）HSRP may have one active router，one standby router，multiple listening router.While VRRP may have one master router，multiple backup router.
    （5）HSRP exchange three kinds of message， hello message，coup message ，resign message. VRRP exchange only one kind of message， advertisement message.
    （6）In VRRP，preempt is enable by default.But in HSRP preemt is disable by default.

  • 第3题：

    What does the command show | compare rollback 1 display?（）

    • A、the difference between the current candidate configuration and the candidate configuration from one commit ago
    • B、the difference between the current active configuration and the current candidate configuration
    • C、the difference between the current active configuration and the active configuration from one commit ago
    • D、the difference between the current candidate configuration and the archived configuration from one commit ago

    正确答案:D

  • 第4题：

    单选题
    The dew point temperature is（）.
    A

    always higher than the air temperature

    B

    always lower than the air temperature

    C

    equal to the difference between the wet and dry bulb temperatures

    D

    the temperature at which the air is saturated with water vapor


    正确答案： D
    解析： 暂无解析

  • 第5题：

    单选题
    High-velocity fog（）.
    A

    is a finer，more diffuse water spray than low-velocity fog

    B

    requires that the water pressure be no greater than 60 psi

    C

    produces an effective fog pattern no more than 6 feet beyond the nozzle

    D

    extinguishes a fire by absorbing heat and reducing the supply of oxygen


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    Which of the followings will affect the spray of fuel oil?（）
    A

    coke deposits

    B

    cylinder water temperature

    C

    asphalt in fuel oil

    D

    lub oil


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to（）.
    A

    a difference in water pressure

    B

    the method of breaking up the water stream

    C

    the length of the applicator

    D

    All of the above


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    The spray of water in low-velocity fog will have（）.
    A

    greater range than high-velocity fog

    B

    lesser range than high-velocity fog

    C

    about the same range as high-velocity fog

    D

    greater range than a solid stream


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    Distortion of the spray pattern of a nozzle or injector may be indicated by a/an（）
    A

    high firing pressure

    B

    overload of that particular cylinder

    C

    smoky exhaust

    D

    cooling water temperature rise


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    On what do you depend having the air cooler of main engine chemically washed?（）
    A

    increased air pressure differenced before and aft air cooler

    B

    reduced exhaust temperature in all cylinders

    C

    reduced temperature difference between water inlet and outlet

    D

    both A and C


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    If not attached to the nozzle,each low-velocity spray applicator on a vessel must be stowed（）.
    A

    in a protected area on the main deck

    B

    inside a machinery space near the entrance

    C

    next to the fire hydrant to which the fire hose is attached

    D

    on a rack inside the quarters near the entrance


    正确答案： B
    解析： 暂无解析

  • 第12题：

    单选题
    Firefighting foam is only effective when the foam（）.
    A

    penetrates to the bottom of the fire

    B

    is kept saturated with low-velocity water fog

    C

    mixes with the burning fuel oil

    D

    completely covers the top of the burning liquid


    正确答案： B
    解析： 暂无解析

  • 第13题：

    If not attached to the nozzle, each low-velocity spray applicator on a vessel must be stowed__________.

    A.in a protected area on the main deck

    B.inside a machinery space near the entrance

    C.next to the fire hydrant to which the fire hose is attached

    D.on a rack inside the quarters near the entrance


    正确答案：C
    如果没有喷嘴接头，则船上的低速喷嘴要放在皮龙箱子里面。

  • 第14题：

    What does the command show | compare rollback 1 display?（）

    • A、the difference between the current candidate configuration and the candidate configuration from one commit ago
    • B、the difference etween the current active configuration and the active configuration from the one commit ago
    • C、the difference between the current active configuration and the active configuration from one commit ago
    • D、the difference between the current candidate configuration and the archived configuration from one commit ago

    正确答案:D

  • 第15题：

    单选题
    One advantage of the all-purpose nozzle is that it（）.
    A

    can fit any size hose

    B

    converts a stream of water into a fog

    C

    increases the amount of water reaching the fire

    D

    can spray two streams of water at the same time


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    What does the command show | compare rollback 1 display?（）
    A

    the difference between the current candidate configuration and the candidate configuration from one commit ago

    B

    the difference between the current active configuration and the current candidate configuration

    C

    the difference between the current active configuration and the active configuration from one commit ago

    D

    the difference between the current candidate configuration and the archived configuration from one commit ago


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    The height of tide is the （）.
    A

    depth of water at a specific time due to tidal effect

    B

    difference between the depth of the water and the area's tidal datum

    C

    difference between the depth of the water and the high water tidal level

    D

    difference between the depth of the water at high tide and the depth of the water at low tide


    正确答案： A
    解析： 暂无解析

  • 第18题：

    单选题
    The design of for a flash type evaporator is of critical importance because it must provide an optimum feedwater spray pattern that facilitates the flashing process, and it must also maintain a pressure differential between successive stages（）
    A

    condenser

    B

    flashing device

    C

    lashing device

    D

    vacuum pump


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    What could cause a significant difference between actual chain tension and the tension measured by the tensiometer? （）
    A

    The type of anchor and mooring line being used

    B

    The type of bottom in which the ship is anchored

    C

    A significant difference between air and water temperature

    D

    The chain contacting a chock or fairlead between the tensiometer and the lower swivel fairlead


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    What does the command show | compare rollback 1 display?（）
    A

    the difference between the current candidate configuration and the candidate configuration from one commit ago

    B

    the difference etween the current active configuration and the active configuration from the one commit ago

    C

    the difference between the current active configuration and the active configuration from one commit ago

    D

    the difference between the current candidate configuration and the archived configuration from one commit ago


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    A distorted spray pattern from a fuel injector can cause a diesel engine to have （）
    A

    higher firing pressure

    B

    more power output

    C

    lower fuel pressure

    D

    less power output


    正确答案： B
    解析： 暂无解析

  • 第22题：

    单选题
    A fire main system must have enough fire hydrants so that each accessible space may be sprayed with（）.
    A

    a low velocity spray applicator

    B

    a water spray or solid stream

    C

    at least two spray patterns of water

    D

    at least 25 psi delivered pressure


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    The 12-foot low-velocity fog applicator（）.
    A

    has a spray pattern 12 feet in diameter

    B

    can be used in conjunction with both 1-1/2 inch and 2-1/2 inch all-purpose nozzles

    C

    has a 90°bend at its discharge end

    D

    has a screw thread end which connects to the all-purpose nozzle


    正确答案： B
    解析： 暂无解析

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