A.the speed to be retarded by the friction brake
B.a load to go downward at full speed
C.the circuit breaker to turn off
D.the resistors to overheat and eventually burn out
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A.International Cargo Bureau Regulations
B.Load Line Regulations
C.Rules and Regulations for Cargo and Miscellaneous Vessels
D.Vessel's classification society rules and regulations
A.Hoist upper & lower limits
B.Luff travel limits
C.Rider block hoist upper & lower limits
D.All of the above
A.is the SWL of the crane
B.are the SWL of the crane
C.the SWL of the crane is
D.the SWL of the crane are
A.executed
B.located
C.fixed
D.measured
A.Electro-hydraulic units
B.Steam units
C.Independent internal combustion power units
D.All of the above
最新試題
What is meant by the term“l(fā)uffing the boom”of a crane（）．
Which statement comparing a shipboard crane to conventional gear is TRUE（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
Most pedestal crane power is provided by（）.
When using slings，cargo handlers should take all the following precautions except（）.
The net productivity per gang-hour can be improved through a decrease of（）.
What is/are the advantage（s）of cranes over conventional cargo booms（）.
How should you signal the crane operator to lower the boom and raise the load（）.
The item（）is not the advantage of the hydraulic winch．
How should you signal the crane operator to hoist（）.