A.Guy
B.Shroud
C.Spider
D.Topping lift
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A.Cargo whip
B.Gooseneck fitting
C.Spider band
D.Topping lift
A.Loading
B.Discharging
C.Crude oil washing
D.Steaming tanks
A.A centerline crane can never be operated in tandem
B.One crane is able to work one end of two adjacent hatches
C.These cranes are more economical and weigh less than outboard-mounted cranes
D.One crane is able to work both sides of the ship
A.The cranes may be operated independently
B.The cranes may be interconnected for twin operation
C.When twinned，the crane rotation on the foundation assembly is unlimited
D.All of the above
A.The cranes may be operated independently
B.The cranes may be interconnected for twin operation
C.The cranes are powered by independent internal combustion power units
D.All of the above
最新試題
Running an electric winch at slow speed over a long period of time causes（）.
The item（）is not the advantage of the hydraulic winch．
When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.
Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.
When discharging an oil cargo，the first consideration is to（）.
Which of the following statements is FALSE concerning cranes being installed on the centerline of vessels（）.
How should you signal the crane operator to move slowly（）.
What does “evel-luffing” accomplish during crane operations（）.
The net productivity per gang-hour can be improved through a decrease of（）.
Where is the most probable location of the remote shutdown station for cargo pumps on a tank barge carrying oil（）.