更多"What is used to prevent twisting of"的相关试题:
[单项选择]When towing astern what equipment should be stowed ready for use near the towline?（）
A. First aid kit
B. Axe or cutting torch
C. Fire extinguisher
D. Chafing gear
[单项选择]When towing，what is the main reason for using a chain bridle on a wire hawser（）.
A. It makes for an easy connection
B. It gives a spring effect to cushion the shock
C. It eliminates the necessity of a swivel
D. It does not chafe
[单项选择]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
[单项选择]To clean a dirty fiber towing hawser used in ocean towing，you should（）.
A. use lye or other mild detergent
B. wash it with fresh water，dry and store it
C. wash it with salt water
D. use cleaning fluid on nylon，dacron and other synthetic lines
[单项选择]In towing，heaving lines are used for（）.
A. passing a tow bridle to the tug
B. passing a messenger line
C. heaving in the tow bridle
D. service lines with rocket line throwers
[单项选择]What is NOT required on an uninspected towing vessel? （）
A. Certificate of Documentation
B. Certificate of Inspection
C. Operators Merchant Marine license
D. FCC Station License
[单项选择]Fittings used for towing must be（）.
A. Coast Guard approved
B. stamped with maximum working loads
C. securely fastened
D. positioned exactly at the bow of the towed vessel
[单项选择]A chain bridle is used when towing astern because it（）.
A. Is easy to connect
B. Provides an effective catenary and absorbs shock due to its weight
C. Makes rigging a swivel unnecessary
D. Prevents the tow from yawing by the drag of the chains in a seaway
[单项选择]What is used for preventing pollution damage to the sea from ships?（）
A. MARPOL 73/78
B. SOLAS 74
C. STCW 78/95
D. ISPS 2002
[单项选择]What is used to correct for both induced and permanent magnetism，and consequently must be readjusted with radical changes in latitude（）.
A. Flinders bar
B. Soft iron spheres
C. Fore-and-aft permanent magnets in their trays
D. Heeling magnet
[单项选择]What is used as an indicator of initial stability? （）
A. GM
B. KG
C. KM
D. GZ
[单项选择]Generally, what is used to inflate life rafts?（）.
A. Non-toxic gas
B. oxygen
C. Hydrogen
D. Helium
[单项选择]What is used to test a tank for oxygen content?（）
A. Combustible gas indicator
B. Vapor indicator
C. Atmosphere analyzer kit
D. None of the above
[单项选择]A towing vessel becomes tripped while towing on a hawser astern. What factor is MOST important when assessing the risk of capsizing? （）
A. Length of the towline
B. Height of the towline connection
C. Longitudinal position of the towline connection
D. Direction of opposing force
