According to the regulations，what fire safety control feature is required in quick-closing shut off valves?（）<br>A:Electrical cut off switch<br>B:A fusible link<br>C:Manual cut off switch<br>D:A water spray actuator

According to the regulations，what fire safety control feature is required in quick-closing shut off valves?（）
A:Electrical cut off switch
B:A fusible link
C:Manual cut off switch
D:A water spray actuator

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)