问题
单项选择题
The necessity of the segregation of cargoes is determined by（）.
A.experience from practice
B.various types of cargoes
C.different types of ships
D.personal abilities
答案
参考答案：B
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The necessity of the segregation of cargoes is determined by（）.
A.experience from practice
B.various types of cargoes
C.different types of ships
D.personal abilities
参考答案：B