單項(xiàng)選擇題What is likely to occur when you are surging synthetic mooring lines on the gypsyhead during mooring operations?（）

A.The lines may jam and then jump off the gypsyhead
B.If there is sudden strain on the line，the man tending the line may be pulled into the gypsyhead
C.The lines' surging may cause the vessel to surge
D.The heat generated may cause the lines to temporarily fuse to the gypsyhead


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1.單項(xiàng)選擇題Two types of anchor shackles which are currently available are（）.

A.U-Type and posilok shackles
B.C-Type and wedge shackles
C.D-Type and bow shackles
D.wedge and kenter shackles

2.單項(xiàng)選擇題The revolving drum of a winch used to haul lines is called a（）.

A.bull gear
B.gypsyhead
C.spanner
D.wildcat

3.單項(xiàng)選擇題The purpose for the bag or box on top of some survival craft is to（）.

A.right the craft in case of capsizing
B.increase area for radar detection
C.act as a sail in case of a power loss
D.steady the craft in heavy seas

4.單項(xiàng)選擇題The locking pin that joins the parts of a detachable link is held in position by（）.

A.a tack weld
B.the self-locking characteristics of its taper
C.a cotter pin
D.a lead plug

5.單項(xiàng)選擇題The lifeline of a life float or buoyant apparatusshall（）.

A.be at least 3/8 inch diameter and properly secured around the sides and ends of the device
B.be festooned in bights not longer than three feet long
C.have a seine float in each bight unless the line is an inherently buoyant material
D.All of the above