脊柱骨折并发脊髓损伤手术的目的是

A．整复骨折与脱位

B．解除脊髓或神经根的压迫

C．内固定稳定脊柱

D．部分脊髓或马尾损伤者，可于术中修复

E．手术中可直接给予神经营养药物

The most variable factor in the control of broken stowage is（）.

A.the use of excessive amounts of dunnage

B.the use of excessive amount of filler cargo

C.the failure to stow some item in neat and uniform rows and tiers

D.the skill, industry and interest of the longshoremen