国际仓储物流协会的会员中大约80%的会员来自（）。
A、货代业
B、仓储业
C、运输业
D、生产性企业
参考答案：C
如何帮助学生减轻学习疲劳？
Your tank vessel is fully loaded, and you find that she is down slightly by the head. To adjust the trim, you may（）.
A.add ballast aft
B.load more cargo aft
C.shift cargo aft
D.All of the above
