欢迎来到牛牛题库网 牛牛题库官网
logo
搜索
全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶辅助机械

单项选择题

（） are mounted in pairs to protect the boiler against overpressure.

A.Safety valves
B.Water tubes
C.Steam stop valves
D.Blow down valves

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
In a （） boiler the hot gases from the furnace pass through the tubes while the water is on the outside.

A.water-tube
B.fire-tube
C.exhaust gas
D.None of the above is true
单项选择题
In a （） boiler the water flows through the inside of the tubes while the hot gases pass around the outside.

A.water-tube
B.fire-tube
C.exhaust gas
D.none of the above
单项选择题
The tube in a boiler should be blinded if found （）.

A.scaled
B.informed
C.leaky
D.deformed
微信小程序免费搜题

All Rights Reserved 版权所有©牛牛题库网(nntiku.com)

备案号：湘ICP备2022003000号-1

微信扫一扫,加关注免费搜题

微信扫一扫,加关注免费搜题