对于结构厚度不大而面积较大的大体积混凝土结构宜采用（）分层的浇筑方案。A．分段B．斜面

All portable fire extinguishers must be capable of being ______.

A.carried by hand to a fire

B.carried or rolled to a fire

C.recharged in the field

D.used on class “B” fire

A.Fire hose might be damaged by cargo operations

B.Vessel is in port

C.Fire-main system is not charged

D.Fire pumps are used for purposes other than supplying water to the fire main

A.within the space concerned

B.outside the space concerned

C.the throttle station

D.within the fire room

A.The high discharge pressure of the rotary pumps permits a larger volume of fluid per unit time than the reciprocating pump

B.Rotary pumps are capable of pumping more fluid than reciprocating pumps of the same weight

C.Rotary pumps occupy only one-half the space of reciprocating pumps

D.Rotary pumps eliminate discharge slippage of the pumped liquid, while this does not hold true for a reciprocating pump

Lifesaving regulations require that a fire drill include ______.

A.staring the fire pumps

B.checking the operation of watertight doors

C.checking arrangements for abandon ship

D.All of the above

Lifesaving regulations require that a fire drill include ______．

A.Starting the fire pumps

B.Checking the operation of watertight doors

C.Checking arrangements for abandon ship

D.All of the above

A.Classification Society Rules

B.National requirements

C.The IMO International Convention for the Safety of Life at Sea

D.All of the above

A.Any one component can be eliminated to extinguish a fire

B.Any two components must be eliminated to properly extinguish a fire

C.Any three components must be eliminated to properly extinguish a fire

D.Ali four components must be eliminated to extinguish any fire

A fire and boat drill on a tank vessel shall, by regulation, include _____.

A.starting the fire pumps

B.checking firemans outfits and other personnel rescue equipment

C.checking relevant communications equipment

D.All of the above