更多"When jumping into water upon which "的相关试题:
[单项选择]When abandoning ship and jumping into the water from a substantial height without a life jacket，you should（）.
A. dive head first，using your hands to break the surface of the water
B. hold your arms firmly at your sides and jump feet first
C. jump feet first，covering your nose and mouth with one hand and grasping the opposing upper arm with the other
D. jump feet first，holding your knees to your chest
[单项选择]When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
A. Should not exceed
B. Must be up to
C. Should exceed
D. Should be about
[单项选择]
When fuel oil is accidentally missed with lube oil which of the following processes can be used to separate them?（）
Ⅰ.filtering
Ⅱ.settling
A. Ⅰ only
B. Ⅱ only
C. either Ⅰ or Ⅱ
D. neither Ⅰ or Ⅱ
[单项选择]When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
A. filter to remove the fuel oil
B. use the settler to remove the fuel oil
C. remove the fuel oil by centrifuging
D. drain and then renew the lube oil supply
[单项选择]When adding oil to a refrigeration system, precautions must be taken to ensure that （）.
A. the compressor suction pressure is not too high
B. all air is purged from the pump and charging fittings
C. the high pressure cutout switch is held open to prevent accidental starting
D. the condenser is completely shutdown first
[单项选择]When two oil separators are working in series, they should work with （）
A. both as clarifiers
B. first one as clarifiers, second one as purifier
C. both as purifiers
D. first one as purifier, second one as clarifier
[单项选择]When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent （）.
A. air from contacting the oil vapors
B. permitting re-ignition boiling of the heated oil
C. spontaneous combustion below the oil surface
D. toxic fumes from escaping to the surface
[单项选择]The booster pump, which supplies diesel oil to（） , should have a possibility of being powered by compressed air or by emergency power.
A. the main engines
B. the auxiliary engines
C. the emergency generator engine
D. the auxiliary engines and the main engine(s)
[单项选择]When separating fuel oil in oil separator, the separating quantity is（） of the real quantity.
A. 100%
B. 80%
C. 1/2
D. 1/3
[单项选择]When oil is accidentally discharged into the water，what should you do after reporting the discharge（）.
A. Contain the oil and remove as much of it as possible from the water
B. Throw chemical agents on the water to disperse the oil
C. Throw sand on the water to sink the oil
D. Obtain your permit from the Corps of Engineers
[单项选择]Which lubricating oil additive is used in diesel engines to reduce the tendency for sludge and varnish to form on the engine parts?（）
A. Flash point improvers
B. Pour point improvers
C. Inhibitors
D. Foam suppressors
[单项选择]If found oil when we open low oil level plug of separator, it indicates （）
A. the separator is overload
B. the monitor equipment of separator fails
C. the discharge pump of separator can not work
D. the temperature of oil water is low
[单项选择]Unless such oil tanker carries crude oil which is not suitable for crude oil washing，the oil tanker shall（）the system in accordance with the requirements of that Regulation.
A. operate
B. check
C. install
D. overhaul
[单项选择]When oil is discharged overboard，an entry is required in the（）.
A. engine rough log
B. Oil Record Book
C. Official Logbook
D. deck rough log
[单项选择]When discharging an oil cargo，the first consideration is to（）.
A. get the bow up
B. discharge from the wings first
C. discharge from the centerline tanks first
D. discharge from amidships first
[单项选择]When separating lube oil separator, the optimal separating quantity is（）of the rated quantity on name plate.
A. 100%
B. 1/2
C. 1/5
D. 1/3
[单项选择]Which oil is not suitable for use as storm oil?（）
A. Fish oil
B. Vegetable oil
C. Mineral oil
D. Animal oil
[单项选择]When fighting an oil or gasoline fire in the bilge，which of the following should NOT be used?（）
A. Foam
B. Solid stream water nozzle
C. All-purpose nozzle
D. Carbon dioxide
[单项选择]When the fuel oil is burning in the combustion chamber, it （）.
A. gives up large amount of heat
B. gives off large amount of heat
C. gives up large amount of steam
D. gives off large amount of steam
