What is the minimum period of time that the air supply for a self-contained breathing apparatus is required to last、

试卷相关题目

• 1My ship is equipped ______ automatic hatch covers．

  A.with

  B.by

  C.on

  D.in

  开始考试点击查看答案
• 2A hygrometer is a device used for determining ______．

  A.the absolute temperature

  B.atmospheric pressure

  C.wind velocity

  D.relative humidity

  开始考试点击查看答案
• 3Manila lines in which the strands are right-hand laid ______．

  A.should be coiled in a clockwise direction

  B.should be coiled in a counterclockwise direction

  C.may be coiled either clockwise or counterclockwise

  D.should never be coiled

  开始考试点击查看答案
• 4Molded depth is measured from the ______．

  A.inside of the shell

  B.outside of the shell

  C.top of the center vertical keel

  D.top of the garboard stake

  开始考试点击查看答案
• 5Strips of timber fixed to the frames of a ship, either in a horizontal or vertical direction, whichkeep cargo away from the sides of the ship, assisting ventilation and helping protect against a build-up of moisture or condensation are termed as ______．

  A.frames

  B.shell plates

  C.bilge plates

  D.cargo batten

  开始考试点击查看答案
• 6Aboard a survival craft，ether can be used to ______．

  A.start the engine in cold weather

  B.aid in helping personnel breathe

  C.prime the sprinkler system

  D.prime the air supply

  开始考试点击查看答案
• 7You notice smoke coming from an open laundry room doorway．After activating the fire alarm, which of the following would you do FIRST、

  A.Attempt to determine what is burning．

  B.Acquire the nearest life jacket.

  C.Break out the nearest fire hose.

  D.Wait for the fire team to arrive and assist as directed.

  开始考试点击查看答案
• 8If the survival craft is not loaded to full capacity，the personnel should be ______．

  A.loaded more on the port side forward

  B.loaded equally on both sides with more forward

  C.loaded equally on both sides with more aft

  D.allowed to sit anywhere

  开始考试点击查看答案
• 9Keeping the draft at or below the load line mark will insure that the vessel has adequate ______．

  A.ballast

  B.reserve buoyancy

  C.displacement

  D.rolling periods

  开始考试点击查看答案
• 10The two most effective generating forces of surface ocean currents are ______．

  A.temperature and salinity differences in the water

  B.wind and density differences in the water

  C.water depth and underwater topography

  D.rotation of the Earth and continental interference

  开始考试点击查看答案