单选题A fire may be spread by which of the following means?（）A Conduction of heat to adjacent surfacesB Direct radiationC ConvectionD All of the above

Which of the following means "收信人"?

A: Recipient

B: Buyer

C: Consumer

D: Sender

Fairy stories are a means by which children's impulses may be ______.

A) beneficially channeled

B) given a destructive tendency

C) held back until maturity

D) effectively suppressed

A.Rules

B.Format

C.Etiquette

D.Notice

Fire may be spread by which means?

A.Conduction of heat to adjacent surfaces

B.Direct radiation

C.Convection

D.All of the above

In the event of fire in a machinery space，______.

A.the fixed carbon dioxide system should be used only when all other means of extinguishment have failed

B.the fixed carbon dioxide system should be used immediately，as it is the most efficient means of extinguishment

C.water in any form should not be used as it will spread the fire

D.the space should be opened 5 minutes after flooding CO2 to prevent injury to personnel

Which of the following is NOT the face-to-face means of communication for international trade?

A、fax

B、meeting

C、briefing

D、presentation

Which of the following components provides a direct source of seawater for the fire main system?

A.Rose box

B.Sea chest

C.Sluice(闸式) valve

D.Fire pump stuffing box

Which of the following means "还盘"?

A: Good market

B: L/C

C: Counter offer

D: Quote

Which of the following is suitable for bagged cargo？ ______.

A.hydraulically operated pusher

B.spread beam sling

C.revolving roll clamping device

D.platform sling