单项选择题
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
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相关考题
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单项选择题
While loading bulk oil, you notice oil on the water near the bargeWhich of the following actions should you carry out FIRST?（）
A.Search the vessel for leaks
B.Notify terminal superintendent
C.Stop loading
D.Notify the Coast Guard -
单项选择题
Your vessel is taking on fuel oil when a small leak develops in the hose and you have ordered the pumping stoppedBefore resuming pumping，you should（）.
A.notify the terminal superintendent
B.place a large drip pan under the leak and ping the scuppers
C.repair the hose with a patch
D.replace the hose -
单项选择题
A combustible gas indicator is used to determine （）.
A.if there is sufficient oxygen to support life
B.the toxicity of flammable gases or vapors
C.the amount of CO2 present in flue gas
D.the presence of flammable gases or vapors in the air
