单选题 1分

Which of the following precautions must be taken electric impression heater is used to keep the cool...

Which of the following precautions must be taken electric impression heater is used to keep the coolant in a diesel engine during the time the engine is secured?
  • A. .the coolant temperature must be maintained at 180°c
  • B. .the thermostatic bypass valves must be manually opened before the engine is started
  • C. .the pressure cap must be removed while the ??
  • D. .electrical power to the heater must be secure

你可能感兴趣的试题

1 单选题 1分
  • A..heat-resisting acrylic(丙烯酸的)
  • B..heat-resisting aluminum
  • C..insulating varnish
  • D..insulating white lead
2 单选题 1分
  • A. .the coolant temperature must be maintained at 180°c
  • B. .the thermostatic bypass valves must be manually opened before the engine is started
  • C. .the pressure cap must be removed while the ??
  • D. .electrical power to the heater must be secure
3 单选题 1分
  • A. .flushing separator with cold water
  • B. .increasing bilge water supply flow
  • C. .heating oily water properly
  • D. .opening manual oil discharge valve
4 单选题 1分
  • A..the driving engine will over-speed
  • B..the anchor will immediately drop
  • C..the clutch will overheat
  • D..the brake’s effectiveness will be reduced
5 单选题 1分
  • A..in series
  • B..in parallel
  • C..independently
  • D..in series or parallel