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单选题
Which statement is TRUE concerning fuel vapors on a vessel().
A
Fuel vapors gather in the lowest portions of the vessel
B
Fuel vapors can only be ignited by an open flame
C
Vent outlets should be located above the level of the carburetor air intake
D
None of the above
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更多 “单选题Which statement is TRUE concerning fuel vapors on a vessel().A Fuel vapors gather in the lowest portions of the vesselB Fuel vapors can only be ignited by an open flameC Vent outlets should be located above the level of the carburetor air intakeD None of the above” 相关考题
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Which statement is TRUE concerning the flash point of a substance ________.A.It is lower than the ignition temperatureB.It is the temperature at which a substance will spontaneously igniteC.It is the temperature at which a substance,when ignited,will continue to burnD.It is the temperature at which the released vapors will fall within the explosive range
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Concerning the identification signal for a pilot vessel, in fog, which statement is TRUE?___.A.When at anchor, the pilot vessel is only required to sound anchor signalsB.The identification signal must be sounded any time the pilot vessel is underwayC.The pilot vessel may only sound the identity signal when making wayD.All of the above
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单选题Which statement is TRUE concerning a towing vessel which,due to the nature of her work,is unable to keep out of the way of another vessel?()A
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The Master of the vessel must be on the bridge when the radar is in useB
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They are heavier than air and will settle in the lowest part of the vesselB
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The light comes on at sunsetB
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单选题Which may ignite fuel vapors?()A
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A vessel which cannot avoid a close-quarters situation with a vessel forward of her beam shall reduce her speed to bare steeragewayB
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单选题Which statement concerning locating signals in the GMDSS is FALSE().A
Locating signals are transmitted by survival craft VHF transceiversB
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单选题Which statement is TRUE concerning a vessel equipped with operational radar?().A
She must use this equipment to obtain early warning of risk of collisionB
The use of a radar excuses a vessel from the need of a look-outC
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单选题Which statement is TRUE concerning fuel vapors on a vessel().A
Fuel vapors gather in the lowest portions of the vesselB
Fuel vapors can only be ignited by an open flameC
Vent outlets should be located above the level of the carburetor air intakeD
None of the above
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单选题Which statement is TRUE concerning spare charges for portable fire extinguishers on unmanned tank barges?().A
Spare charges shall be carried for at least 50 percent of each size and variety required on boardB
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Spare charges shall be stowed in watertight containers on deckD
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