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What is TRUE of pressure/vacuum valves?
A.They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tank
B.They should operate in advance of the pressure/vacuum breakers
C.They should be kept in good working order by regular inspection and cleaning
D.All of the above
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更多 “ What is TRUE of pressure/vacuum valves?A.They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tankB.They should operate in advance of the pressure/vacuum breakersC.They should be kept in good working order by regular inspection and cleaningD.All of the above ” 相关考题
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单选题What is TRUE of pressure/vacuum valves? （）A
They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tankB
They should operate in advance of the pressure/vacuum breakersC
They should be kept in good working order by regular inspection and cleaningD
All of the above
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