A.产品价格分析
B.确定营销策略
C.产品生命周期分析
D.项目竞争力分析
第1题
Water can’t be used to put out fires of _____.
A.Class A
B.Class B
C.Class C
D.B+C
第2题
A.A.all the materials
B.B.elemental
C.C.pre-alloyed
D.D.partially alloyed
第3题
听力原文:(A) An extinguisher is being used to put out a fire.
(B) A fire extinguisher is hanging on a wall.
(C) The extinguisher is being recharged.
(D) The fire extinguisher is above the sign.
A.
B.
C.
D.
第4题
Which statement concerning the application of dry chemical powder is FALSE ________.
A.At temperatures of less than 32℉,the extinguisher must be recharged more often
B.When possible,the fire should be attacked from windward
C.The stream should be directed at the base of the fire
D.Directing the stream into burning flammable liquid may cause splashing
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