單項(xiàng)選擇題

Cribbing is（）.

A.wooden blocks or dunnage placed between a deck load and the deck
B.the chains and shackles used to secure a deck cargo
C.a crate in which a deck cargo is packaged
D.cardboard separation pieces placed between deck loads to prevent chafing

微信掃碼免費(fèi)搜題