Which of the following electric motors would be the safest and most reliable to use on the main deck of a vessel in foul weather conditions?()
- ASealed motors
- BDrip proof motors
- CEnclosed motors
- DWatertight motor
Which of the following electric motors would be the safest and most reliable to use on the main deck of a vessel in foul weather conditions?()
1、Which of the motors for the devices li
Which of the motors for the devices listed below is fitted with an instantaneous overload relay?()AFanBPumpCWinchDMachine tool
2、Which of the following represents the
Which of the following represents the maximum percent of oxygen by volume required to be achieved by a ship’s inert gas system, prior to the commencement of crude oil tank washing?()A6%B8%C10%D12%
3、Of which of the following did the auth
Of which of the following did the author provide a guardedly optimistic view?A[A]GDP growth.B[B]The number of layoffs.C[C]Price indexes.D[D]Output of consumer goods.
4、Which of the following is true of the
Which of the following is true of the OECD report?AIt criticizes government-funded research.BIt introduces an effective means of publication.CIt upsets profit-making journal publishers.DIt benefits scientific research considerably.
5、Which of the following represents the
Which of the following represents the emergency signal for fire aboard ship?()AMore than six short blasts and one long blast on the whistleBC...
6、The operator of electrical motors shou
The operator of electrical motors should keep a constant check on the loads they carry because ()Alow loads necessitate frequent insulation cl...