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單項(xiàng)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(xiàng)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(xiàng)選擇題

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

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