问题
单项选择题
（）are to be used for dunnage if you load rice.
A.Wooden planks
B.Rush mats
C.Steel bars
D.Wooden planks and rush mats
答案
参考答案：D
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（）are to be used for dunnage if you load rice.
A.Wooden planks
B.Rush mats
C.Steel bars
D.Wooden planks and rush mats
参考答案：D