單項(xiàng)選擇題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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1.單項(xiàng)選擇題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

2.單項(xiàng)選擇題Right-laid line should be coiled（）.

A.clockwise
B.counterclockwise
C.either clockwise or counterclockwise
D.on a reel

3.單項(xiàng)選擇題On small sailing vessels，the PRIMARY reason for using nylon in a combination chain-nylon anchor line is to（）.

A.provide elasticity
B.increase the strength
C.reduce the cost
D.reduce the weight

4.單項(xiàng)選擇題It’s no good（）down by head．

A.to sail
B.sails
C.sailing
D.sailed

5.單項(xiàng)選擇題How should you try to right a capsized small sailing vessel?（）

A.Position all personnel at the stern and rock the vessel upright
B.Position all personnel around the mast and lift the vessel upright
C.Lock the centerboard in the down position，stand on the centerboard，and pull on a shroud or a halyard
D.Put the centerboard in the up position and have all personnel haul in on the line attached to the mast