单项选择题
The patches where rust have been removed should be wiped clean before paint is（）.
A.applied B.supplied C.replied D.complied
单项选择题 The necessity of the segregation of cargoes is determined by（）.
单项选择题 The National Cargo Bureau represents the（）.
单项选择题 The most variable factor in the control of broken stowage is（）.
