Henry Ford was himself a()mechanic and could build a car with his own hands.
A. bear
B. bore
C. born
D. bearing
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油漆墙壁只要每天用()擦拭即可。
A. 洗洁净
B. 去污剂
C. 气油
D. 湿抹布
胶轮车每次起动失败后,应停()分钟再起动。
A. 1
B. 2
C. 3
D. 5
齿轮的()均以内花键的轴线为标注基准。
A. 径向尺寸
B. 轴向尺寸
C. 长度
D. 分度圆