Which of the following precautions must be taken if an electric immersion heater is used to keep the coolant in a diesel engine warm during the time the engine is secured?（）
1、Which of the precautions listed should
Which of the precautions listed should be observed when taking on diesel fuel?（）ASecure all lighting to the main deckBProvide a portable fan to blow away fumesCProhibit smoking in the areaDDisplay a black triangle during daylight hour
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、Which of the following layers of the T
Which of the following layers of the TCP/IP model most closely corresponds to the network layer of the OSI model?（）AApplicationBInternetCTransportDNetworkEData Link