galvanized to protect against corrosion
held in place with heavy materials such as spare pendant wire
limited to no more than five courses high
provided with bulwarks at both ends of their bays
第1题：
Before leaving port on an ocean tow，a tug captain should assure himself of all the following EXCEPT ______.
A.the towing hawser can be released quickly in an emergency
B.the correct navigation lights are rigged and operable on the tug and tow
C.an insurance underwriter has prepared a pre-sailing survey
D.a pick-up wire has been rigged on the tow in case of a breakaway.
第2题：
Deck beams perform ______ of the following functions in the hull structure of a vessel．① They transfer deck loads to the frames；② They help to maintain the shape of the hull．
A.① only
B.② only
C.Both ① and ②
D.Neither ① nor ②
第3题：
A heavy，thick-walled tube，usually steel，used between the drill pipe and the bit in the drill stem to weight the bit in order to improve its performance is called a ______.
A.heavy-walled drill pipe
B.tool joint
C.down hole tool
D.drill collar
第4题：
Cribbing is ______.
A.wooden blocks or dunnage placed between a deck load and the deck
B.the chains and shackles used to secure a deck cargo
C.a crate in which a deck cargo is packaged
D.cardboard separation pieces placed between deck loads to prevent chafing
第5题：
A bridle for an ocean tow consists of ______.
A.two chains of equal length
B.a single nylon pendant rove through a heavy ring free to move on the pendant
C.two long legs of wire rope shackled to a fishplate
D.a single length of heavy chain with both ends secured on deck to welded pad eyes
第6题：
You intend to tow a barge with one tug and expect continuous high winds from the north．To reduce the yaw of your tow，you should ______．
A.reduce the draft of the barge
B.shorten one leg of the bridle
C.place bulky deck loads as far aft as possible
D.trim the barge down by the bow
第7题：
Limber is a term associated with ______．
A.Emergency gear
B.Drainage
C.Deck cargo storage
D.Securing gear
第8题：
A set of clamps that are latched onto the drill pipe to allow the driller to raise or lower the drill string out of or into the hole are the ______.
A.lifts
B.collars
C.elevators
D.clamps
第9题：
An ocean tow is sinking in deep water. Attempts to sever the towing hawser are unsuccessful Which action should now be taken?______.
A.Abandon the towing vessel.
B.Radio for emergency assistance.
C.Slip the towline and allow it to run off the drum.
D.Secure all watertight openings on the towing vessel.
第10题：
Keep the loads as close to the rail or deck as possible
If cargo is likely to settle，make provisions to secure it after it has settled
Thoroughly secure and shore all cargo so that it cannot move
hen stowing cargo，avoid leaving empty paces