A. 防水功能 B. 护壁功能 C. 携渣作用 D. 冷却润滑功能 E. 养护功能
A. accurate B. vigorous C. complicated D. idle
A. upset B. bothered C. annoyed D. disappointed
A. consideration B. field C. interest D. zone
A. ailing B. failing C. falling D. limiting
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