一起答
单选

In the piping systems of a vessel, what type of valve gives the least resistance to fluid flowwhen fully open?______.

  • A.Globe valve
  • B.Butterfly valve
  • C.Gate valve
  • D.Packless valve
试题出自试卷《甲类三副(航海英语)模拟试题2》
参考答案
查看试卷详情
相关试题
  1. In vessel construction, beam brackets are triangular plates that join the deck beam to a ____.

    • A.bulkhead
    • B.frame
    • C.stanchion
    • D.deck longitudinal
  2. In this port,it is regulated that______will be broadcast every one hour on VHF Channel 6.

    • A.VHF News
    • B.Channel Rules
    • C.Visibility Time
    • D.Navigational Warnings
  3. In vessel construction, a greater number of watertight bulkheads results in ______.

    • A.increased capacity to set flooding boundaries
    • B.decreased capacity to set flooding boundaries
    • C.reduced compartmentation
    • D.greater deck load capacity
  4. In the Southern Hemisphere winds in a low pressure system rotate in a ______.

    • A.clockwise direction
    • B.northeasterly direction
    • C.northerly direction
    • D.counterclockwise direction
  5. In the stowage of deck cargo, cribbing is ______.

    • A.placed on deck to support the cargo
    • B.separation pieces used to keep cylinders upright and steady
    • C.shims for stowing baled cargo
    • D.nets placed across the hatch opening to keep the cargo from falling in the hatch
  6. In the southern hemisphere the wind flow associated with a low pressure system will have which of the following characteristic?________.

    • A.the wind velocity is least near the center of the system
    • B.th e direction of the flow is counterclockwise
    • C.both A and B
    • D.neither A nor B
  7. In the presence of external forces, the center of buoyancy of an inclined vessel is vertically aligned with the ______.

    • A.center of gravity
    • B.metacenter
    • C.center of flotation
    • D.Keel
  8. In the piping systems of a vessel, what type of valve gives the least resistance to fluid flowwhen fully open?______.

    • A.Globe valve
    • B.Butterfly valve
    • C.Gate valve
    • D.Packless valve
  9. In the Northern Hemisphere, when the wind at your location is northerly, the low pressurecenter causing the wind is located to your ______.

    • A.NNW
    • B.WSW
    • C.ESE
    • D.SSW
  10. In the Northern Hemisphere, the largest waves or swells created by a typhoon or hurricanewill be located ______.

    • A.in the southeast quadrant of the storm
    • B.directly behind the storm center
    • C.forward and to the right of its course
    • D.behind and to the left of its course