单选题 1分

When welding or burning aboard a vessel, you must be certain that the space _______.

  • A. is properly vented
  • B. contains no explosive fumes
  • C. has no oil in the bilges
  • D. all of the above

你可能感兴趣的试题

1 单选题 1分
  • A. To be sure that no parts are loose, or that the engine is blocked from rotation
  • B. To get fresh air into cylinders ensuring a safe start of the engine.
  • C. To be sure that all indicator cocks are closed, and no passage into the combustion chamber
  • D. To be sure that we do not have water collected in the cylinders.
2 单选题 1分
  • A. test the starting system
  • B. remove condensation from the cylinders
  • C. check the compression
  • D. check for proper lube oil pressure
3 单选题 1分
  • A. to inspect if the cylinder has the water leakage
  • B. to expel out the residual water/gas/oil from the cylinder
  • C. to check if fuel supply is normal
  • D. A and B.
4 单选题 1分
  • A. Before finished with engine
  • B. After finished with engine
  • C. Before “stand-by” is given to the bridge
  • D. After “stand-by” is given to the bridge
5 单选题 1分
  • A. a brief trial with turning gear
  • B. a long trial by steering gear
  • C. a brief trial on power
  • D. one minute’s trial with windlass