默认题库 - 水手工艺

单选题

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 sea

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单选题

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

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单选题

The 12-foot low-velocity fog applicator（）.

A. has a spray pattern 12 feet in diameter
B. can be used in conjunction with both 1-1/2 inch and 2-1/2 inch all-purpose nozzles
C. has a 90°bend at its discharge end
D. has a screw thread end which connects to the all-purpose nozzle

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单选题

Splices made in nylon should（）.

A. be long splices only
B. have extra tucks taken
C. be short splices only
D. be around a thimble

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单选题

A term used to describe the dip in a towline that acts as a shock absorber is（）.

A. catenary
B. step
C. shock dip
D. bight

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单选题

A shroud is（）.

A. a light sail
B. a topmast stay
C. a sheet
D. standing rigging

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单选题

A piece of small stuff (small line) secured to an object to prevent it from going adrift is a（）.

A. lanyard
B. keeper
C. noose
D. stopper

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单选题

A new coil of nylon line should be opened by（）.

A. pulling the end up through the eye of the coil
B. taking a strain on both ends
C. uncoiling from the outside with the coil standing on end
D. unreeling from a spool

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单选题

A metal ring on the bottom of a block，to which the standing part of a tackle is spliced，is known as a(n)（）.

A. becket
B. loop
C. swivel
D. eye

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单选题

A ketch is a sailing vessel with（）.

A. one mast
B. two masts: with the mizzen stepped abaft the rudder post
C. two masts: with the mizzen stepped forward of the rudder post
D. two masts: a foremast and a mainmast

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