题目内容

If a lathe is dirty, its ____________________ may need to be cleaned.

A. cover
B. guide rails
C. spindles
D. both B and C

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We can spray ______________in order to eliminate the old grease and oil residue.

A. water
B. anti-corrosion solution
C. Detergent
D. washing-up liquid

We can’t use _________to remove the dried bits of dirt and old grease.

A. cleaning paper
B. toothbrush
C. polishing paste
D. nail file

If the spindles are covered in resin, we can use ___________ to clean.

A. solution
B. Toothbrush
C. wooden wedge
D. toothpaste

What does the word "goove" mean?

A. 凹槽
B. 桶
C. 轴承
D. 主轴