safe for becoming rounded
safe for hot work
not safe for personnel
not safe for hot work
第1题：
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
第2题：
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
第3题：
Before entering a fuel tank that has been cleaned, it should be checked with an oxygen indicator and a/an ____.
A.Orsat apparatus
B.flame safety lamp
C.Halide torch
D.combustible gas indicator
第4题：
What is NOT a requirement for the preparation of used，gasoline-propelled cars if they are to be carried as ordinary cargo and not as hazardous cargo ________．
A.The engine must be run until it dies from lack of fuel
B.The fuel tank must be inerted with CO2
C.The ignition key may not be in the ignition
D.The vehicle must be inspected for fuel leaks
第5题：
You are carrying triethylamine，methyl methacrylate and isoprene in your multiple-product tanker. Which of the following statements is true?
A.Isoprene may be carried in a cargo tank adjacent to either of the other two cargoes
B.Methyl methacrylate may not be carried in a tank adjacent to a pump room
C.Methyl methacrylate must usually be heated to maintain its stability
D.Portable thermometers are not permitted to be used to take the cargo temperature of triethylamine
第6题：
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
第7题：
Sometimes it is desirable to connect a member both by riveting and welding. Which statement is TRUE concerning this procedure?
A.Tearing through the member is more likely in this type connection
B.The weld may be broken by the stresses caused by riveting
C.The weld increases the tensile stress on the rivet heads
D.The welding must be completed before the riveting commences
第8题：
Before welding can be done in a tank that has previously 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
第9题：
By regulation，cargo tank atmosphere must be inert before and during which operation ________．
A.Stripping
B.Loading
C.Cleaning
D.All of the above
第10题：
Which statement about entering into a tank which has been sealed for a long time is TRUE ________．
A.The tank should be tested only once to ensure the oxygen content is at least 14% before entry
B.The tank must be tested at frequent intervals to ensure that hazardous gasses have not regenerated
C.The tank need not be tested for oxygen content if it is ventilated for more than 24 hours
D.If the oxygen content tests at less than 12% you should wear an approved gas mask