单选题 1分

Electrical leads and insulation on a motor should be painted with

  • A..heat-resisting acrylic(丙烯酸的)
  • B..heat-resisting aluminum
  • C..insulating varnish
  • D..insulating white lead

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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