问题
单项选择题
For cargoes（）grain meals,coal,ventilation is needed to prevent them（）spontaneous combustion.
A.i.e./of
B.for instance/away
C.for example/off
D.such as/from
答案
参考答案：D
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For cargoes（）grain meals,coal,ventilation is needed to prevent them（）spontaneous combustion.
A.i.e./of
B.for instance/away
C.for example/off
D.such as/from
参考答案：D