问题
单项选择题
In relation to cargo gear,what does SWL mean?（）.
A.Safe working load
B.Ships working lift
C.Starboard wing lift
D.Stress , weight , load
答案
参考答案：A
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In relation to cargo gear,what does SWL mean?（）.
A.Safe working load
B.Ships working lift
C.Starboard wing lift
D.Stress , weight , load
参考答案：A
