问题
单项选择题
0il product samples should be taken from the（）.
A.dock riser
B.ships cargo tanks
C.shore tank discharge
D.All of the above
答案
参考答案：D
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0il product samples should be taken from the（）.
A.dock riser
B.ships cargo tanks
C.shore tank discharge
D.All of the above
参考答案：D