A.moors
B.moor
C.is moored
D.mooring
您可能感興趣的試卷
你可能感興趣的試題
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
When using slings，cargo handlers should take all the following precautions except（）.
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.
Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom（）.
What is/are the advantage（s）of cranes over conventional cargo booms（）.
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
How should you signal the crane operator to move slowly（）.
When viewed from above，the best position for the guy in relation to the boom is（）.
What is meant by the term“l(fā)uffing the boom”of a crane（）．
Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.
What does “evel-luffing” accomplish during crane operations（）.