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 > 船舶电气与船舶安全

单项选择题

Safe welding practice requires （）

A.checking the area for items that may catch fire
B.that a fire watch be posted
C.checking for the explosive gases
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
Which lubricating oil additive is used in diesel engines to reduce the tendency for sludge and varnish to form on the engine parts?（）

A.Flash point improvers
B.Pour point improvers
C.Inhibitors
D.Foam suppressors
单项选择题
Which of the following characteristic of lube oil helps to reduce the amount of deposits in the piston ring belt during the combustion process in a diesel engine?（）

A.Low viscosity index
B.Low carbon forming tendencies
C.High film strength
D.High non-corrosive qualities
单项选择题
A diesel engine exposed to widely varying ambient temperatures should use to a lubricating oil with （）

A.a high viscosity index
B.a low viscosity index
C.neutralize acids
D.resist oxidation at high temperatures
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