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
Running an electric winch at slow speed over a long period of time causes（）.
The net productivity per gang-hour can be improved through a decrease of（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
Most pedestal crane power is provided by（）.
How should you signal the crane operator to move slowly（）.
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
What is the purpose of the equalizing beam aboard a crane vessel（）.
The Master or person in charge of a ship shall ensure the crane record book shows the（）.
Sudden starts or stops of the boom is likely to cause all of the following except（）.