更多"One precaution to take prior to wor"的相关试题:
[单项选择]Prior to getting underway in fresh or brackish water，the Master must（）.
A. log the density of the water
B. secure all overboard discharges
C. take on fresh water ballast
D. clean the sides with fresh water
[单项选择]More than one stage of evaporation can take place by admitting the sea water into chambers with progressively （） pressure in the flash evaporator.
A. lower
B. higher
C. the lower
D. the higher
[单项选择]What is one of the FIRST actions you should take after abandoning and clearing away from a vessel?（）
A. Identify the person in charge
B. Gather up useful floating objects
C. Prepare for arrival of rescue units
D. Arrange watches and duties
[单项选择]The fresh water generator produces fresh water （）.
A. by cooling sea water
B. by heating sea water
C. by evaporation of sea water
D. by purifying sea water
[单项选择]Prior to closing the breaker when paralleling two AC generators, the recommended practice is to have the frequency of the incoming machine （）
A. slightly less than the line frequency
B. the same as the line frequency
C. slightly greater than the line frequency
D. All of the above
[单项选择]Prior to backloading portable tanks or drums onto an offshore supply vessel，check that each tank is（）.
A. painted yellow with diagonal black striping
B. capped and checked for leaks
C. coated with non-corrosive protection
D. mounted on pallets
[单项选择]Prior to magnetic particle inspection of anchor chain，the chain should be（）.
A. degaussed
B. demagnetized
C. soaked
D. sandblasted
[单项选择]Which statement concerning the collection of fresh water is FALSE?（）
A. Fresh water may be obtained from fish
B. lifeboat covers or canopies should be washed with rain before drinking water is collected
C. Fresh water may be collected from condensation inside the life-raft
D. Freshwater cannot be produced from standing seawater
[单项选择]Prior to lowering the lifeboat，the most important item to check is the（）.
A. oars
B. sail
C. boat plug
D. life preservers
[单项选择]Prior to any overhaul work on electric equipment, it is important to ensure the circuits are （）.
A. live
B. dead
C. excited
D. on line
[单项选择]If reefer spaces are not properly cleaned prior to loading cargo，it will most likely cause（）.
A. mold to develop on commodities
B. malfunction of the refrigeration equipment
C. contamination of the insulation in the space
D. All of the above
[单项选择]Heavy residual fuel oils are heated prior to centrifuging to （）
A. reduce fuel weight
B. increase specific gravity
C. separate fuel from lube oil
D. reduce fuel viscosity
[单项选择]Please get everything ready prior（）shifting．
A. on
B. to
C. at
D. for
[单项选择]Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?（）
A. The expansion tank should be topped off
B. The thermostatic water regulating valves should be manually opened
C. The fuel filters should be changed
D. The engine should be turned over slowly with the indicator cocks open
[单项选择]A whistle signal of one prolonged，one short，one prolonged and one short blast，is sounded by a vessel（）.
A. at anchor
B. towing a submerged object
C. being overtaken in a narrow channel
D. in distress
[单项选择]A signal of one prolonged，one short，one prolonged，and one short blast，in that order is given by a vessel（）.
A. engaged on pilotage duty
B. in distress
C. at anchor
D. being overtaken in a narrow channel
