单项选择题
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
The firing of a red star signal may mean（）.A.This is th...
单项选择题The firing of a red star signal may mean（）.
A.This is the best place to land B.You are seen - assistance will be given as soon as possible C.Tail block is made fast D.Slack away
