搜题

【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

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

第1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

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第2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

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第3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

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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

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第5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

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第6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

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第7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

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第8题

[单选题] A large metallic device，mounted directly in the piping (usually located at the dock near the point where the vapor hose is attached)，designed to prevent the passage of a rapidly moving flame through the piping is called a（）.

A、flame arrestor B、flame screen C、detonation arrestor D、detonation blocker

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第9题

[] What is a spill pipe?（）

A、A.A drainage pipe that carries rain or spray from an upper deck to a lower deck B、B.A pipe under the anchor windlass leading to the chain locker C、C.A chute，usually over the stern，to lead dumped garbage clear of the hull D、D.An opening in the deck leading outside the hull

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