A.combustible material
B.ignition source
C.oxygen
D.A and B and C
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A.Two derricks
B.A derrick and a crane
C.Two cranes
D.A crane and a winch
A.360°
B.270°
C.180°
D.90°
A.less
B.more
C.many
D.much
A.a warp end
B.a mooring winch
C.a worm gear
D.a barrel
A.cable lifters
B.spur wheels
C.bollard
D.warpends
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