搜题

【单选题】

Large pipes or down-comers are fitted between the steam drum and （） to ensure good natural circulation of water.

A、fire-tubes

B、furnaces

C、water drums

D、water wall tubes

查看正确答案

更多“Large pipes or down-comers are fitted between the steam drum and （） to ensure good natural circulation of water.”相关的问题

第1题

[单选题] Large pipes or （） are fitted between the steam and water drums to ensure good natural circulation of water.

A、fire-tubes B、furnaces C、down-comers D、soot-blowers

点击查看答案

第2题

[单选题] Oil is supplied to the crosshead using a swinging arm or a （） and is sometimes boosted in pressure to and efficient lubrication.

A、telescopic pipe B、large bore pipe C、generating pipe D、central pipe

点击查看答案

第3题

[单选题] A large valve，usually installed above the ram preventers，that forms a seal in the annular space between the pipe and wellbore or，if no pipe is present，on the wellbore itself is called the（）.

A、annular blowout preventer B、annulus C、accumulator D、automatic choke

点击查看答案

第4题

[单选题] The oil is usually pumped into ship at the loading port by（）.

A、ship’s own pumps B、shore pumps C、large pipes D、large tubes

点击查看答案

第5题

[单选题] Anchor（）(垂直).

A、up B、down C、up and down D、up or down

点击查看答案

第6题

[单选题] A tool consisting of a handle and releasable chain used for turning pipe or fittings of a diameter larger than that which a pipe wrench would fit is called（）.

A、breakout wrench B、makeup tongs C、chain tongs D、pipe spinner

点击查看答案

第7题

[单选题] A vessel when joining or leaving from the side of a traffic separation scheme shall do so at as（）to the general direction of traffic flow as practicable.

A、small an angle B、large an angle C、either small or large an angle D、neither small nor large an angle

点击查看答案

第8题

[单选题] The（）enables water to be blow down or emptied from the boilerIt may be used when partially or completely emptying the boiler.

A、main stem stop valve B、auxiliary steam stop valve C、feed check or control valve D、blow down valve

点击查看答案

第9题

[] It should be apparent that little or nothing is gained by opening a drain at the same time as or after admitting steamThe above sentence probably means （）.

A、A.There is apparent condensate in piping B、B.The steam is not discovered after admitting steam C、C.The condensate should be fully loaded in the piping as admitting steam D、D.The condensate should be fully drained from the piping while admitting steam

点击查看答案

账号：登录

TOP

请使用微信扫码支付

订单号：
遇到问题请联系在线客服