单项选择题
A.personnel line B.whip line C.main hoist line D.pendant
The hinge fitting used to attach the boom to the mast i...
单项选择题The hinge fitting used to attach the boom to the mast is the（）.
A.gooseneck B.step C.swivel D.pintle
The heaviest type pallet is the（）.A.factory palletB.shi...
单项选择题The heaviest type pallet is the（）.
A.factory pallet B.shipping pallet C.stevedoring pallet D.warehouse pallet
The head of the bend is the（）.A.top or upstream beginni...
单项选择题The head of the bend is the（）.
A.top or upstream beginning of a bend B.bottom or downstream beginning of a bend C.midpoint or center radius of a bend D.center line or apex of a bend
