A.moors
B.moor
C.is moored
D.mooring
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A.which
B.where
C.when
D.how
A.before
B.when
C.after
D.during
A.maximum counter weight required
B.minimum horsepower required
C.hoist rope strength
D.allowable load
A.horizontal position of the boom
B.vertical position of the boom
C.horizontal position of the load being lifted
D.vertical position of the load being lifted
A.length of the boom
B.angle of the boom
C.lifting capacity of the boom
D.direction of the boom
最新試題
What is meant by the term“l(fā)uffing the boom”of a crane（）．
On no account（）to be exceeded.
Which statement comparing a shipboard crane to conventional gear is TRUE（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
Damage by（）shall not be considered as handling damage.
How should you signal the crane operator to hoist（）.
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（）.
Which operation may cause the pressure in an inert tank to fall below the prescribed limits（）.
What is the purpose of the equalizing beam aboard a crane vessel（）.