单选题A towline should be fastened to（）.A the chocks at the bow of a towed vesselB the most forward，centermost point of a towed vessel such as a sturdy bow railC the mast of a towed sailboatD a secure fitting near the bow of the towed vessel

Which factor(s) might indicate that a towline should be removed from service?

A.Visible damage to the towline，including fishhooks

B.Measurements showing a decrease in diameter

C.A surface condition of corrosion and discoloration

D.All of the above

When rigging a stage，the standing part should be fastened to the horns of a stage with which of the following hitches ________．

A.Clove hitch

B.Timber hitch

C.Marlinespike hitch

D.Double blackwall hitch

When should you conduct a visual inspection of your towline?

A.Whenever its serviceability is in doubt

B.In accordance with the manufacturer's recommendation

C.At least once a month

D.All of the above

During the towing of a survival craft，a lookout should be on station to ______．

A.release the towline in an emergency

B.help the helmsman steer

C.look for food and water

D.check the water level in the bilge

When using slings，cargo handlers should take all the following precautions except ______．

A.Ensure that slings are securely fastened around the load

B.Avoid careless winch operations，especially when handling fragile cargo

C.Exercise care when using hooks，crowbars，and similar tools

D.Keep the loads as close to the rail or deck as possible

In towing，chocks are used to ______.

A.protect the towline from chafing

B.secure the end of the towline on the tug

C.stop off the towline while retrieving it

D.absorb shock loading on the towline