A.winch speed
B.boom strength
C.load radius
D.cable strength
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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
A.Maximum mooring line tension divided by the anchor's weight in air
B.Anchor's weight in air divided by the maximum mooring line tension
C.Preloading tension divided by the anchor's weight in air
D.Operating tension divided by the anchor's weight in air
最新試題
Official draft measurements should be（）by authorized persons，agreed by both parties involved.
When discharging an oil cargo，the first consideration is to（）.
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
Which statement comparing a shipboard crane to conventional gear is TRUE（）.
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（）.
How should you signal the crane operator to lower the boom and raise the load（）.
Sudden starts or stops of the boom is likely to cause all of the following except（）.
What is meant by the term“l(fā)uffing the boom”of a crane（）．