A.Cleanly/during
B.Clear/meanwhile
C.Clean/between
D.Clean/prior to
您可能感興趣的試卷
你可能感興趣的試題
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
Sudden starts or stops of the boom is likely to cause all of the following except（）.
How should you signal the crane operator to move slowly（）.
When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.
Most pedestal crane power is provided by（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
What is/are the advantage（s）of cranes over conventional cargo booms（）.
The item（）is not the advantage of the hydraulic winch．
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.
When discharging an oil cargo，the first consideration is to（）.
Where is the most probable location of the remote shutdown station for cargo pumps on a tank barge carrying oil（）.