99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項(xiàng)選擇題

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

A.the use of excessive amounts of dunnage
B.the use of excessive amounts of filler cargo
C.the failure to stow some items in neat and uniform rows and tiers
D.the skill,industry and interest of the longshoremen

微信掃碼免費(fèi)搜題