单项选择题
A.breaking a cargo runner B.parting guys topping lifts C.carrying away a block D.overheating the resistors and eventually burning out
Running an electric winch at slow speed over a long per...
单项选择题Running an electric winch at slow speed over a long period of time causes（）.
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
Regulations concerning the stowage，lashing，and securing...
单项选择题Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.
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
Pedestal cranes have limit switches to restrict movemen...
单项选择题Pedestal cranes have limit switches to restrict movement of which function（s）（）.
A.Hoist upper & lower limits B.Luff travel limits C.Rider block hoist upper & lower limits D.All of the above
