A.slipway
B.graving dock
C.ground warp
D.caisson dock
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A.Hydraulic drive systems
B.Electric drive systems
C.Steam drive systems
D.Man-powered drive systems
A.a master controller or switchbox
B.a group of relays
C.contactors
D.a solenoid brake
A.one meter from the tank bottom and one meter below the tank top
B.one half the ullage of the tank and one meter below the tank top
C.one half the ullage of the tank and one meter above the tank bottom
D.at three meter intervals from the tank top
A.winch speed
B.boom strength
C.load radius
D.cable strength
A.discharging
B.recircling
C.loading
D.taking in
最新試題
If an attempt is made to hoist a load that exceeds the capacity of an electric winch，an overload safety device causes a circuit breaker to cut off the current to the winch motor（）.
When discharging an oil cargo，the first consideration is to（）.
Most pedestal crane power is provided by（）.
When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.
Damage by（）shall not be considered as handling damage.
Which statement comparing a shipboard crane to conventional gear is TRUE（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.