A.Cleanly/during
B.Clear/meanwhile
C.Clean/between
D.Clean/prior to
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A.slipway
B.graving dock
C.ground warp
D.caisson dock
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
最新試題
Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom（）.
Damage by（）shall not be considered as handling damage.
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.
How should you signal the crane operator to lower the boom and raise the load（）.
Which method should be used to warm up the pump turbines prior to discharge（）.
Which of the following statements is FALSE concerning cranes being installed on the centerline of vessels（）.
Where is the most probable location of the remote shutdown station for cargo pumps on a tank barge carrying oil（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.
What is meant by the term“l(fā)uffing the boom”of a crane（）．