A firebox explosion in an automatically fired auxiliary boiler may be the result of （）<br>A:excessive purging before lighting off<br>B:insufficient trail for ignition period<br>C:a faulty transformer in the ignition circuit<br>D:insufficient purging before lighting off

A firebox explosion in an automatically fired auxiliary boiler may be the result of （）
A:excessive purging before lighting off
B:insufficient trail for ignition period
C:a faulty transformer in the ignition circuit
D:insufficient purging before lighting off

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:【10244552】个 (题库试题定时更新)