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單項選擇題

（）of mast paint shall we put on?

A. What coats
B. How much coat
C. How many coats
D. Where coats

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單項選擇題

Finally, a wire brush should be used on all bare （）to remove the last of the scale.

A.metal
B.wood
C.cement
D.all the above

單項選擇題

The （）plates should be scraped and brushed to bare metal.

A.rusty
B.tidy
C.dirty
D.cleaned

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