更多"A sufficient amount of chain must b"的相关试题:
[单项选择]A sufficient amount of chain must be veered when anchoring a vessel to ensure（）.
A. the vessel has enough room to swing while at anchor
B. the anchor flukes bite into the ocean bottom
C. there is sufficient weight from the anchor and chain to prevent dragging
D. there is more chain out than there is in the chain locker
[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]Chain suspension ladders on a ship must be replaced by fixed ladders if the required chain suspension ladder（）.
A. has been sent in for repair
B. cannot be supported against a vertical flat surface
C. does not extend to the water when the ship lists 15 degrees
D. is not equipped with vertical guard rails on either side
[单项选择]Which factor must be considered when determining the order of loading of dissimilar products through the same piping system aboard a tanker? （）
A. Contamination of the cargo
B. Flash points
C. Reid vapor pressures
D. Specific gravities
[单项选择]What action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）
A. The tank must be gas freed
B. The tank must be ballasted
C. The tank must be vented to the atmosphere
D. The bypass valve must also be closed
[单项选择]Which action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）
A. The tank must be gas freed
B. The tank must be ballasted
C. The tank must be vented to the atmosphere
D. The bypass valve must also be closed
[单项选择]When discharging bilge water, which criteria must be observed?（）
A. The requirement for the oil content of bilge water discharged is 15 ppm
B. No discharge in sensitive waters
C. Any discharge in sensitive waters
D. International, national or local requirements have to be observed
[单项选择]When must the Master of a vessel log the position of load line marks in relation to the surface of the water in the Official Logbook?（）
A. Once a day
B. At the change of every watch
C. Only when in fresh or brackish water
D. Prior to getting underway
[单项选择]When must a dry chemical fire extinguisher be recharged?（）
A. After each use
B. When the air temperature exceeds 90°F
C. Every 6 months
D. Every 12 months
[单项选择]When a deck cargo is secured with chain or wire lashings and grab (pear) links，which statement is FALSE?（）
A. The amount of take-up is limited by the length of the turnbuckle
B. At the grab (pear) link，the slack end of chain should be led back and secured to the chain above the link
C. The lashings should be inspected each day and any slack taken up
D. The turnbuckle should be secured with a stick or lock nuts
[单项选择]When paralleled, AC generators must have the same （）
A. frequency
B. number of phases
C. phase rotation
D. All of the above
[单项选择]When must the Master or person in charge of a ship log the position of load line marks in relation to the surface of the water in the logbook?（）
A. Once a day
B. At the change of every watch
C. Only when in fresh or brackish water
D. Prior to getting underway
[单项选择]When we write, we must write as（）as we can.
A. careful
B. carefully
C. more careful
D. more carefully
[单项选择]When using the lifeboat compass，you must be careful to（）.
A. set it on the centerline of the boat
B. apply the correction for compass error
C. keep metal objects away from it
D. All of the above
[单项选择]When welding or burning aboard a vessel, you must be certain that the space （）.
A. is properly vented
B. contains no explosive fumes
C. has no oil in the bilges
D. all of the above
[单项选择]When measuring AC current flow, you must always connect the meter （）
A. in series with the power source and load
B. in parallel with the power source and load
C. insuring correct polarity
D. using the lowest range possible to prevent instrument damage
[单项选择]Deficient oxygen content inside a chain locker can be detected with（）.
A. litmus paper
B. a combustible gas indicator
C. an oxygen breathing apparatus
D. an oxygen indicator
