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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

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單項(xiàng)選擇題

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

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

單項(xiàng)選擇題

The rusty plates should be wiped clean before paint is （）.

A.applied
B.supplied
C.placed
D.watered