更多"Before entering a fuel tank that ha"的相关试题:
[单项选择]Before welding is permitted on a fuel tank, it must be certified or declared （）
A. safe for becoming rounded
B. safe for hot work
C. not safe for personnel
D. not safe for hot work
[单项选择]Fuel has been injected but ignition fails The possible cause may be （）.
A. leaky exhaust valve
B. increased scavenging air temperature
C. engine cylinders not scavenged sufficiently
D. water in the fuel oil
[单项选择]Before welding in a tank that has carried petroleum products，the tank must be certified by （）.
A. the Coast Guard
B. the ABS
C. the shipyard fire department
D. a certified marine chemist
[单项选择]Fuel tank的中文含义是（）。
A. 供油泵
B. 燃料系
C. 燃油滤清
D. 燃料箱
[单项选择]Gasoline fuel tank vents should terminate（）.
A. in the engine compartment
B. in the fuel tank space
C. above or outside the hull
D. at the most convenient location
[单项选择]Before being used the fuel service tank should be drained of （）.
A. soda solution
B. mechanical impurities
C. ballast
D. water and residuals
[单项选择]If fuel tank levels are found to have increased after a grounding, you should suspect （）.
A. a damaged pneumercator line
B. a puncture, crack, or hole in the skin of the vessel
C. improper record keeping of fuel transfer activities
D. contamination of the contaminated steam supply system
[单项选择]A tank which has been sealed for a long period of time can be dangerous because （）.
A. steel surfaces consume oxygen by rusting
B. sealed tanks usually form a vacuum
C. moisture condenses in the tank, displacing the oxygen
D. most tank coatings give off poisonous vapors in the presence of moisture
[单项选择]In fighting a fire in a fuel tank, the FIRST action you should attempt is to （）.
A. secure all sources of fresh air to the tank
B. begin transferring the fuel to other tanks
C. top off the tank to force out all vapors
D. station someone at the fixed CO2 release controls
[单项选择]Prior to burning or welding on a fuel tank on a ship，regulations require that an inspection be made. An entry in the unofficial logbook is required if this inspection is made by（）.
A. a marine chemist
B. the Officer in Charge，Marine Inspection
C. the Master or person in charge of the ship
D. the National Fire Protection Association
[单项选择]Before welding can be done in a tank that has carried petroleum products，a certificate must be obtained from（）.
A. the Customs
B. the Register Bureau of Shipping
C. the Shipyard Fire Department
D. a certified gas chemist
[单项选择]A tank has been sealed and unventilated for a long period of timeWhich of the following conditions does this indicate?（）
A. The tank is safe to enter
B. The tank is especially dangerous to enter
C. Carbon monoxide is present
D. Water vapor present when the tank was sealed has oxidized
[单项选择]Before a tank is to be crude oil washed，the oxygen content in the tank must be measured at a position（）.
A. immediately above the level of the oil
B. at the top of the tank
C. in the vent riser
D. one meter from the deck
[单项选择]Fuel oil tank vents are fitted with a screen which will stop（）.
A. oil from flowing out of the tank vent
B. air from entering the tank vent
C. vapors from leaving the tank vent
D. flames on deck from entering the tank vent
[单项选择]If the low level alarm of the diesel fuel day tank fails to function, you can expect trouble from（）
A. overheated injection pumps
B. water condensed in the cylinders
C. fuel dilution of the lube oil
D. air in the fuel system
