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
Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.
Which operation may cause the pressure in an inert tank to fall below the prescribed limits（）.
The net productivity per gang-hour can be improved through a decrease of（）.
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
How should you signal the crane operator to move slowly（）.
When discharging an oil cargo，the first consideration is to（）.
How should you signal the crane operator to lower the boom and raise the load（）.
Official draft measurements should be（）by authorized persons，agreed by both parties involved.
Where is the most probable location of the remote shutdown station for cargo pumps on a tank barge carrying oil（）.