更多"The perforated，elevated bottom of t"的相关试题:
[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
[单项选择]Before entering the chain locker，you should（）.
A. have someone standing by
B. make sure there is sufficient air within the locker
C. de-energize the windlass
D. All of the above
[单项选择]What can cause a lack of oxygen in a chain locker（）．
A. Absorption
B. Osmosis
C. Evaporation
D. Oxidation
[单项选择]After extinguishing a paint locker fire using the fixed CO2 system，the next action is to have the space（）.
A. opened and burned material removed
B. left closed with vents off until all boundaries are cool
C. checked for oxygen content
D. doused with water to prevent reflash
[单项选择]A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound（）.
A. a 2-second blast every 20 seconds
B. a 4-second blast every 20 seconds
C. an 8-second blast every 30 seconds
D. a 10-second blast every 30 seconds
[单项选择]If heavy smoke is coming from the paint locker,the first firefighting response should be to（）.
A. release the CO fiooding system
B. open the door to evaluate of the fire
C. enter and use a portable extinguisher
D. secure the ventilation
[单项选择]（）is the chain?
A. How
B. What
C. Why
D. How about
[单项选择]A measurement device for inspecting anchor chain is the（）.
A. slide rule
B. go-no-go gauge
C. derrick tape
D. amp probe
[单项选择]Chain slings are suitable for heavy slender articles，such as（）.
A. timber or steel rails
B. locomotives or boilers
C. railway passenger coaches
D. motor vehicles
[单项选择]After deploying the anchor，a permanent chain chaser is（）.
A. removed from the anchor chain
B. connected to a buoy at the anchor
C. stripped back to the rig and secured
D. connected to a buoy halfway down the chain
[单项选择]A chain stripper is used to（）.
A. prevent chain from clinging to the wildcat
B. clean the marine debris from the chain
C. flake chain from a boat's chain locker
D. clean chain prior to an x-ray inspection
[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]A design modification of an anchor chain which prevents kinking is the（）.
A. detachable link
B. stud link
C. Kenter link
D. connection link
[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
