What is TRUE of pressure/vacuum valves? （）<br>A:They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tank<br>B:They should operate in advance of the pressure/vacuum breakers<br>C:They should be kept in good working order by regular inspection and cleaning<br>D:All of the above

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

出自：海船船员证

提示：
同一【IP】的非会员用户每天可免费获取10次答案

收藏本站【zk.995w.com】，下次访问不迷路

本站试题总数:【10252937】个 (题库试题定时更新)