单项选择题

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 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

点击查看答案&解析

上一题目录下一题

相关考题

单项选择题

What is required to be posted in the pilothouse of a vessel? （）

A.Certificate of Inspection
B.Officer's licenses
C.Station Bill
D.Vessel's Maneuvering Characteristics

单项选择题

What is required to be posted in the pilothouse of a vessel?（）

A.Certificate of Inspection
B.Officer's licenses
C.Muster List ("Station Bill")
D.Vessel's Maneuvering Characteristics

单项选择题

What is NOT required on an uninspected towing vessel? （）

A.Certificate of Documentation
B.Certificate of Inspection
C.Operators Merchant Marine license
D.FCC Station License