單項選擇題When anchoring a small sailing vessel in rough weather，the best anchor line would be composed of（）.

A.chain-wire
B.chain-manila
C.chain-nylon
D.all chain


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1.單項選擇題What is meant by spotting the boom?（）

A.Lowering it into a cradle
B.Placing it in a desired position
C.Spotting it with wash primer and red lead
D.Two-blocking it

2.單項選擇題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

3.單項選擇題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

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

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

5.單項選擇題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