A.Hydraulic drive systems
B.Electric drive systems
C.Steam drive systems
D.Man-powered drive systems
您可能感興趣的試卷
你可能感興趣的試題
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
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
最新試題
Which statement comparing a shipboard crane to conventional gear is TRUE（）.
Running an electric winch at slow speed over a long period of time causes（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
Sudden starts or stops of the boom is likely to cause all of the following except（）.
Where is the most probable location of the remote shutdown station for cargo pumps on a tank barge carrying oil（）.
When discharging an oil cargo，the first consideration is to（）.
Which method should be used to warm up the pump turbines prior to discharge（）.
Official draft measurements should be（）by authorized persons，agreed by both parties involved.
What is meant by the term“l(fā)uffing the boom”of a crane（）．
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.