单项选择题
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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相关考题
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单项选择题
The （）plates should be scraped and brushed to bare metal.
A.rusty
B.tidy
C.dirty
D.cleaned -
单项选择题
The rusty plates should be wiped clean before paint is （）.
A.applied
B.supplied
C.placed
D.watered -
单项选择题
Before an area can be repainted, preparation is （）.
A.good
B.useless
C.necessary
D.bad
