單項(xiàng)選擇題All the traces are()old ones.

A.Clear
B.Evident
C.Obvious
D.Apparently


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1.單項(xiàng)選擇題A VESSEL,OTHER THAN A RESCUE UNIT,DESIGNATED TO CO-ORDINATE SURFACE SEARCH AND RESCUE OPERATION WITHIN A SPECIFIED AREA is known as().

A.Salving vessel
B.Co-ordinator surface search
C.MERSAR
D.The vessel being salved

2.單項(xiàng)選擇題()is not a search pattern.

A.Williamson Turn
B.Parallel
C.Sector
D.zig-zag maneuver

3.單項(xiàng)選擇題() is not a search manual.

A.MERSAR
B.IMOSAR
C.ICAO SAR
D.SOSREP

4.單項(xiàng)選擇題()is a/an aircraft used in SAR.

A.MRCC
B.SOSREP
C.MCA
D.3A

5.單項(xiàng)選擇題Which statement about firefighting foam is TRUE?()

A.Foam conducts electricity
B.To be most effective,foam should be directed at the base of the fire
C.Foam is most effective on burning liquids which are flowing
D.Foam can ONLY be used to extinguish class A fires