The class of fire on which a blanketing effect is essential to extinguish the fire is

A．Class 'A'

B．Class 'B'

C．Class 'C'

D．Class 'D'

[单选题]Which of the listed fire extinguishers cannot be easily recharged aboard ship?A．Soda acidB．Carbon dioxideC．Dry chemicalD．cartridge-operated Foam

[单选题]Which of the following is not true about the English class system?A.It is a

[单选题]F．ire dampers prevent the fire spreading through the process ofA．convectionB．conductionC．radiationD．direct contact

[单选题]( ) is a relationship in which a word of a certain class determines the for

[单选题]( ) is a relationship in which a word of a certain class determines the for

[单选题]( ) is a relationship in which a word of a certain class determines the for

[问答题]Last night,a fire broke out in Ann’s house in Manchester.Ann’s parents were

[问答题]Last night,a fire broke out in Ann’s house in Manchester.Ann’s parents were

[问答题]Last night,a fire broke out in Ann’s house in Manchester.Ann’s parents were

[问答题]Last night,a fire broke out in Ann’s house in Manchester.Ann’s parents were