问题
单项选择题
Fire hose should be washed with（）.
A.salt water and a wire brush
B.caustic soap
C.mild soap and fresh water
D.a holystone
答案
参考答案：C
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Fire hose should be washed with（）.
A.salt water and a wire brush
B.caustic soap
C.mild soap and fresh water
D.a holystone
参考答案：C
