为下列句子选出适当的图片。

(     ) 1. My sister likes listening to music.

(     ) 2. Swimming is my favourite sport.

( ) 3. Look! They are playing football.

( ) 4. Jack plays computer games on Sundays.

(     ) 5. Watching television is my brother's hobby.

三角皮带传动中，两带轮轴的中心线应保持平行，端面应在一水平面。