Blocking open or removing fire dampers can cause（）.

A、fixed foam systems to be ineffective

B、faster cooling of the fire

C、the accumulation of explosive gases

D、the fire to spread through the ventilation system

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更多“Blocking open or removing fire dampers can cause（）.”相关的问题

第1题

[单选题] Which statement describes a spanning-tree network that has converged?（）

A、All switch and bridge ports are in the forwarding state. B、All switch and bridge ports are assigned as either root or designated ports. C、All switch and bridge ports are in either the forwarding or blocking state. D、All switch and bridge ports are either blocking or looping.

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第2题

[] There shall be（）into sleeping rooms from cargo and machinery spaces or from galleys,storerooms,drying rooms or communal sanitary areas.

A、A.no direct openings B、B.direct openings C、C.no more than one direct opening D、D.up to one direct opening

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第3题

[单选题] Kapok life jackets should NOT be（）.

A、stowed near open flame or where smoking is permitted B、used as seats，pillows，or foot rests C、left on open decks D、All of the above

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第4题

[单选题] Kapok life jackets should not be（）.

A、stowed near open flame or where smoking is permitted B、used as seats, pillows, or foot rests C、left on open decks D、All of the above

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第5题

[单选题] What are the switch and bridge port characteristics of a layer two spanning-tree network that is fully converged?（）

A、All switch and bridge ports are in the forwarding state. B、All switch and bridge ports are in the stand-by state. C、All switch and bridge ports are assigned as either root or designated ports. D、All switch and bridge ports are in either the forwarding or blocking state. E、All switch and bridge are either blocking or looping.