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
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A.winch speed
B.boom strength
C.load radius
D.cable strength
A.discharging
B.recircling
C.loading
D.taking in
A.Overloading
B.Overstowage
C.Overbooking
D.Overcarriage
A.Regulation of discharge pressure from cargo pumps
B.Maintaining constant velocity in cargo lines
C.Regulation of suction head on cargo pumps
D.To maintain a tank or void at atmospheric pressure
A.Electrical loading
B.Mechanical distribution
C.Compressibility of air
D.Mechanical friction
最新試題
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
Official draft measurements should be（）by authorized persons，agreed by both parties involved.
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 viewed from above，the best position for the guy in relation to the boom is（）.
Which method should be used to warm up the pump turbines prior to discharge（）.
How should you signal the crane operator to move slowly（）.
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
What is/are the advantage（s）of cranes over conventional cargo booms（）.
What is the purpose of the equalizing beam aboard a crane vessel（）.
What does “evel-luffing” accomplish during crane operations（）.